28013960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3169}}^1$

素因数の和:3210

約数の個数: 64

約数和(自身を含む): 71895600

約数和(自身を除く): 43881640

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 3169, 4420, 6338, 8840, 12676, 15845, 25352, 31690, 41197, 53873, 63380, 82394, 107746, 126760, 164788, 205985, 215492, 269365, 329576, 411970, 430984, 538730, 700349, 823940, 1077460, 1400698, 1647880, 2154920, 2801396, 3501745, 5602792, 7003490, 14006980, 28013960]

約数ペア:

[(1, 28013960), (2, 14006980), (4, 7003490), (5, 5602792), (8, 3501745), (10, 2801396), (13, 2154920), (17, 1647880), (20, 1400698), (26, 1077460), (34, 823940), (40, 700349), (52, 538730), (65, 430984), (68, 411970), (85, 329576), (104, 269365), (130, 215492), (136, 205985), (170, 164788), (221, 126760), (260, 107746), (340, 82394), (442, 63380), (520, 53873), (680, 41197), (884, 31690), (1105, 25352), (1768, 15845), (2210, 12676), (3169, 8840), (4420, 6338)]