128856840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1171}}^1$

素因数の和:1323

約数の個数: 128

約数和(自身を含む): 445547520

約数和(自身を除く): 316690680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 210, 262, 280, 393, 420, 524, 655, 786, 840, 917, 1048, 1171, 1310, 1572, 1834, 1965, 2342, 2620, 2751, 3144, 3513, 3668, 3930, 4585, 4684, 5240, 5502, 5855, 7026, 7336, 7860, 8197, 9170, 9368, 11004, 11710, 13755, 14052, 15720, 16394, 17565, 18340, 22008, 23420, 24591, 27510, 28104, 32788, 35130, 36680, 40985, 46840, 49182, 55020, 65576, 70260, 81970, 98364, 110040, 122955, 140520, 153401, 163940, 196728, 245910, 306802, 327880, 460203, 491820, 613604, 767005, 920406, 983640, 1073807, 1227208, 1534010, 1840812, 2147614, 2301015, 3068020, 3221421, 3681624, 4295228, 4602030, 5369035, 6136040, 6442842, 8590456, 9204060, 10738070, 12885684, 16107105, 18408120, 21476140, 25771368, 32214210, 42952280, 64428420, 128856840]

約数ペア:

[(1, 128856840), (2, 64428420), (3, 42952280), (4, 32214210), (5, 25771368), (6, 21476140), (7, 18408120), (8, 16107105), (10, 12885684), (12, 10738070), (14, 9204060), (15, 8590456), (20, 6442842), (21, 6136040), (24, 5369035), (28, 4602030), (30, 4295228), (35, 3681624), (40, 3221421), (42, 3068020), (56, 2301015), (60, 2147614), (70, 1840812), (84, 1534010), (105, 1227208), (120, 1073807), (131, 983640), (140, 920406), (168, 767005), (210, 613604), (262, 491820), (280, 460203), (393, 327880), (420, 306802), (524, 245910), (655, 196728), (786, 163940), (840, 153401), (917, 140520), (1048, 122955), (1171, 110040), (1310, 98364), (1572, 81970), (1834, 70260), (1965, 65576), (2342, 55020), (2620, 49182), (2751, 46840), (3144, 40985), (3513, 36680), (3668, 35130), (3930, 32788), (4585, 28104), (4684, 27510), (5240, 24591), (5502, 23420), (5855, 22008), (7026, 18340), (7336, 17565), (7860, 16394), (8197, 15720), (9170, 14052), (9368, 13755), (11004, 11710)]