78242840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 205752960

約数和(自身を除く): 127510120

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 53, 65, 68, 85, 104, 106, 130, 136, 167, 170, 212, 221, 260, 265, 334, 340, 424, 442, 520, 530, 668, 680, 689, 835, 884, 901, 1060, 1105, 1336, 1378, 1670, 1768, 1802, 2120, 2171, 2210, 2756, 2839, 3340, 3445, 3604, 4342, 4420, 4505, 5512, 5678, 6680, 6890, 7208, 8684, 8840, 8851, 9010, 10855, 11356, 11713, 13780, 14195, 17368, 17702, 18020, 21710, 22712, 23426, 27560, 28390, 35404, 36040, 36907, 43420, 44255, 46852, 56780, 58565, 70808, 73814, 86840, 88510, 93704, 113560, 115063, 117130, 147628, 150467, 177020, 184535, 230126, 234260, 295256, 300934, 354040, 369070, 460252, 468520, 575315, 601868, 738140, 752335, 920504, 1150630, 1203736, 1476280, 1504670, 1956071, 2301260, 3009340, 3912142, 4602520, 6018680, 7824284, 9780355, 15648568, 19560710, 39121420, 78242840]

約数ペア:

[(1, 78242840), (2, 39121420), (4, 19560710), (5, 15648568), (8, 9780355), (10, 7824284), (13, 6018680), (17, 4602520), (20, 3912142), (26, 3009340), (34, 2301260), (40, 1956071), (52, 1504670), (53, 1476280), (65, 1203736), (68, 1150630), (85, 920504), (104, 752335), (106, 738140), (130, 601868), (136, 575315), (167, 468520), (170, 460252), (212, 369070), (221, 354040), (260, 300934), (265, 295256), (334, 234260), (340, 230126), (424, 184535), (442, 177020), (520, 150467), (530, 147628), (668, 117130), (680, 115063), (689, 113560), (835, 93704), (884, 88510), (901, 86840), (1060, 73814), (1105, 70808), (1336, 58565), (1378, 56780), (1670, 46852), (1768, 44255), (1802, 43420), (2120, 36907), (2171, 36040), (2210, 35404), (2756, 28390), (2839, 27560), (3340, 23426), (3445, 22712), (3604, 21710), (4342, 18020), (4420, 17702), (4505, 17368), (5512, 14195), (5678, 13780), (6680, 11713), (6890, 11356), (7208, 10855), (8684, 9010), (8840, 8851)]