20947680

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:410

約数の個数: 192

約数和(自身を含む): 79168320

約数和(自身を除く): 58220640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 32, 36, 39, 40, 45, 48, 52, 54, 60, 65, 72, 78, 80, 90, 96, 104, 108, 117, 120, 130, 135, 144, 156, 160, 180, 195, 208, 216, 234, 240, 260, 270, 288, 312, 351, 360, 373, 390, 416, 432, 468, 480, 520, 540, 585, 624, 702, 720, 746, 780, 864, 936, 1040, 1080, 1119, 1170, 1248, 1404, 1440, 1492, 1560, 1755, 1865, 1872, 2080, 2160, 2238, 2340, 2808, 2984, 3120, 3357, 3510, 3730, 3744, 4320, 4476, 4680, 4849, 5595, 5616, 5968, 6240, 6714, 7020, 7460, 8952, 9360, 9698, 10071, 11190, 11232, 11936, 13428, 14040, 14547, 14920, 16785, 17904, 18720, 19396, 20142, 22380, 24245, 26856, 28080, 29094, 29840, 33570, 35808, 38792, 40284, 43641, 44760, 48490, 50355, 53712, 56160, 58188, 59680, 67140, 72735, 77584, 80568, 87282, 89520, 96980, 100710, 107424, 116376, 130923, 134280, 145470, 155168, 161136, 174564, 179040, 193960, 201420, 218205, 232752, 261846, 268560, 290940, 322272, 349128, 387920, 402840, 436410, 465504, 523692, 537120, 581880, 654615, 698256, 775840, 805680, 872820, 1047384, 1163760, 1309230, 1396512, 1611360, 1745640, 2094768, 2327520, 2618460, 3491280, 4189536, 5236920, 6982560, 10473840, 20947680]

約数ペア:

[(1, 20947680), (2, 10473840), (3, 6982560), (4, 5236920), (5, 4189536), (6, 3491280), (8, 2618460), (9, 2327520), (10, 2094768), (12, 1745640), (13, 1611360), (15, 1396512), (16, 1309230), (18, 1163760), (20, 1047384), (24, 872820), (26, 805680), (27, 775840), (30, 698256), (32, 654615), (36, 581880), (39, 537120), (40, 523692), (45, 465504), (48, 436410), (52, 402840), (54, 387920), (60, 349128), (65, 322272), (72, 290940), (78, 268560), (80, 261846), (90, 232752), (96, 218205), (104, 201420), (108, 193960), (117, 179040), (120, 174564), (130, 161136), (135, 155168), (144, 145470), (156, 134280), (160, 130923), (180, 116376), (195, 107424), (208, 100710), (216, 96980), (234, 89520), (240, 87282), (260, 80568), (270, 77584), (288, 72735), (312, 67140), (351, 59680), (360, 58188), (373, 56160), (390, 53712), (416, 50355), (432, 48490), (468, 44760), (480, 43641), (520, 40284), (540, 38792), (585, 35808), (624, 33570), (702, 29840), (720, 29094), (746, 28080), (780, 26856), (864, 24245), (936, 22380), (1040, 20142), (1080, 19396), (1119, 18720), (1170, 17904), (1248, 16785), (1404, 14920), (1440, 14547), (1492, 14040), (1560, 13428), (1755, 11936), (1865, 11232), (1872, 11190), (2080, 10071), (2160, 9698), (2238, 9360), (2340, 8952), (2808, 7460), (2984, 7020), (3120, 6714), (3357, 6240), (3510, 5968), (3730, 5616), (3744, 5595), (4320, 4849), (4476, 4680)]