1278129840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409657}}^1$

素因数の和:409686

約数の個数: 80

約数和(自身を含む): 4266997728

約数和(自身を除く): 2988867888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 409657, 819314, 1228971, 1638628, 2048285, 2457942, 3277256, 4096570, 4915884, 5325541, 6144855, 6554512, 8193140, 9831768, 10651082, 12289710, 15976623, 16386280, 19663536, 21302164, 24579420, 26627705, 31953246, 32772560, 42604328, 49158840, 53255410, 63906492, 79883115, 85208656, 98317680, 106510820, 127812984, 159766230, 213021640, 255625968, 319532460, 426043280, 639064920, 1278129840]

約数ペア:

[(1, 1278129840), (2, 639064920), (3, 426043280), (4, 319532460), (5, 255625968), (6, 213021640), (8, 159766230), (10, 127812984), (12, 106510820), (13, 98317680), (15, 85208656), (16, 79883115), (20, 63906492), (24, 53255410), (26, 49158840), (30, 42604328), (39, 32772560), (40, 31953246), (48, 26627705), (52, 24579420), (60, 21302164), (65, 19663536), (78, 16386280), (80, 15976623), (104, 12289710), (120, 10651082), (130, 9831768), (156, 8193140), (195, 6554512), (208, 6144855), (240, 5325541), (260, 4915884), (312, 4096570), (390, 3277256), (520, 2457942), (624, 2048285), (780, 1638628), (1040, 1228971), (1560, 819314), (3120, 409657)]