1987655520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{31}}^3\times {\mathrm{139}}^1$

素因数の和:250

約数の個数: 192

約数和(自身を含む): 6516357120

約数和(自身を除く): 4528701600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 80, 93, 96, 120, 124, 139, 155, 160, 186, 240, 248, 278, 310, 372, 417, 465, 480, 496, 556, 620, 695, 744, 834, 930, 961, 992, 1112, 1240, 1390, 1488, 1668, 1860, 1922, 2085, 2224, 2480, 2780, 2883, 2976, 3336, 3720, 3844, 4170, 4309, 4448, 4805, 4960, 5560, 5766, 6672, 7440, 7688, 8340, 8618, 9610, 11120, 11532, 12927, 13344, 14415, 14880, 15376, 16680, 17236, 19220, 21545, 22240, 23064, 25854, 28830, 29791, 30752, 33360, 34472, 38440, 43090, 46128, 51708, 57660, 59582, 64635, 66720, 68944, 76880, 86180, 89373, 92256, 103416, 115320, 119164, 129270, 133579, 137888, 148955, 153760, 172360, 178746, 206832, 230640, 238328, 258540, 267158, 297910, 344720, 357492, 400737, 413664, 446865, 461280, 476656, 517080, 534316, 595820, 667895, 689440, 714984, 801474, 893730, 953312, 1034160, 1068632, 1191640, 1335790, 1429968, 1602948, 1787460, 2003685, 2068320, 2137264, 2383280, 2671580, 2859936, 3205896, 3574920, 4007370, 4140949, 4274528, 4766560, 5343160, 6411792, 7149840, 8014740, 8281898, 10686320, 12422847, 12823584, 14299680, 16029480, 16563796, 20704745, 21372640, 24845694, 32058960, 33127592, 41409490, 49691388, 62114235, 64117920, 66255184, 82818980, 99382776, 124228470, 132510368, 165637960, 198765552, 248456940, 331275920, 397531104, 496913880, 662551840, 993827760, 1987655520]

約数ペア:

[(1, 1987655520), (2, 993827760), (3, 662551840), (4, 496913880), (5, 397531104), (6, 331275920), (8, 248456940), (10, 198765552), (12, 165637960), (15, 132510368), (16, 124228470), (20, 99382776), (24, 82818980), (30, 66255184), (31, 64117920), (32, 62114235), (40, 49691388), (48, 41409490), (60, 33127592), (62, 32058960), (80, 24845694), (93, 21372640), (96, 20704745), (120, 16563796), (124, 16029480), (139, 14299680), (155, 12823584), (160, 12422847), (186, 10686320), (240, 8281898), (248, 8014740), (278, 7149840), (310, 6411792), (372, 5343160), (417, 4766560), (465, 4274528), (480, 4140949), (496, 4007370), (556, 3574920), (620, 3205896), (695, 2859936), (744, 2671580), (834, 2383280), (930, 2137264), (961, 2068320), (992, 2003685), (1112, 1787460), (1240, 1602948), (1390, 1429968), (1488, 1335790), (1668, 1191640), (1860, 1068632), (1922, 1034160), (2085, 953312), (2224, 893730), (2480, 801474), (2780, 714984), (2883, 689440), (2976, 667895), (3336, 595820), (3720, 534316), (3844, 517080), (4170, 476656), (4309, 461280), (4448, 446865), (4805, 413664), (4960, 400737), (5560, 357492), (5766, 344720), (6672, 297910), (7440, 267158), (7688, 258540), (8340, 238328), (8618, 230640), (9610, 206832), (11120, 178746), (11532, 172360), (12927, 153760), (13344, 148955), (14415, 137888), (14880, 133579), (15376, 129270), (16680, 119164), (17236, 115320), (19220, 103416), (21545, 92256), (22240, 89373), (23064, 86180), (25854, 76880), (28830, 68944), (29791, 66720), (30752, 64635), (33360, 59582), (34472, 57660), (38440, 51708), (43090, 46128)]