491570720

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 144

約数和(自身を含む): 1261189440

約数和(自身を除く): 769618720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 80, 92, 115, 124, 139, 155, 160, 184, 230, 248, 278, 310, 368, 460, 496, 556, 620, 695, 713, 736, 920, 961, 992, 1112, 1240, 1390, 1426, 1840, 1922, 2224, 2480, 2780, 2852, 3197, 3565, 3680, 3844, 4309, 4448, 4805, 4960, 5560, 5704, 6394, 7130, 7688, 8618, 9610, 11120, 11408, 12788, 14260, 15376, 15985, 17236, 19220, 21545, 22103, 22240, 22816, 25576, 28520, 30752, 31970, 34472, 38440, 43090, 44206, 51152, 57040, 63940, 68944, 76880, 86180, 88412, 99107, 102304, 110515, 114080, 127880, 133579, 137888, 153760, 172360, 176824, 198214, 221030, 255760, 267158, 344720, 353648, 396428, 442060, 495535, 511520, 534316, 667895, 689440, 707296, 792856, 884120, 991070, 1068632, 1335790, 1585712, 1768240, 1982140, 2137264, 2671580, 3072317, 3171424, 3536480, 3964280, 4274528, 5343160, 6144634, 7928560, 10686320, 12289268, 15361585, 15857120, 21372640, 24578536, 30723170, 49157072, 61446340, 98314144, 122892680, 245785360, 491570720]

約数ペア:

[(1, 491570720), (2, 245785360), (4, 122892680), (5, 98314144), (8, 61446340), (10, 49157072), (16, 30723170), (20, 24578536), (23, 21372640), (31, 15857120), (32, 15361585), (40, 12289268), (46, 10686320), (62, 7928560), (80, 6144634), (92, 5343160), (115, 4274528), (124, 3964280), (139, 3536480), (155, 3171424), (160, 3072317), (184, 2671580), (230, 2137264), (248, 1982140), (278, 1768240), (310, 1585712), (368, 1335790), (460, 1068632), (496, 991070), (556, 884120), (620, 792856), (695, 707296), (713, 689440), (736, 667895), (920, 534316), (961, 511520), (992, 495535), (1112, 442060), (1240, 396428), (1390, 353648), (1426, 344720), (1840, 267158), (1922, 255760), (2224, 221030), (2480, 198214), (2780, 176824), (2852, 172360), (3197, 153760), (3565, 137888), (3680, 133579), (3844, 127880), (4309, 114080), (4448, 110515), (4805, 102304), (4960, 99107), (5560, 88412), (5704, 86180), (6394, 76880), (7130, 68944), (7688, 63940), (8618, 57040), (9610, 51152), (11120, 44206), (11408, 43090), (12788, 38440), (14260, 34472), (15376, 31970), (15985, 30752), (17236, 28520), (19220, 25576), (21545, 22816), (22103, 22240)]