661882240

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:580

約数の個数: 128

約数和(自身を含む): 1659352320

約数和(自身を除く): 997470080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 73, 80, 124, 128, 146, 155, 160, 248, 292, 310, 320, 365, 457, 496, 584, 620, 640, 730, 914, 992, 1168, 1240, 1460, 1828, 1984, 2263, 2285, 2336, 2480, 2920, 3656, 3968, 4526, 4570, 4672, 4960, 5840, 7312, 9052, 9140, 9344, 9920, 11315, 11680, 14167, 14624, 18104, 18280, 19840, 22630, 23360, 28334, 29248, 33361, 36208, 36560, 45260, 46720, 56668, 58496, 66722, 70835, 72416, 73120, 90520, 113336, 133444, 141670, 144832, 146240, 166805, 181040, 226672, 266888, 283340, 289664, 292480, 333610, 362080, 453344, 533776, 566680, 667220, 724160, 906688, 1034191, 1067552, 1133360, 1334440, 1448320, 1813376, 2068382, 2135104, 2266720, 2668880, 4136764, 4270208, 4533440, 5170955, 5337760, 8273528, 9066880, 10341910, 10675520, 16547056, 20683820, 21351040, 33094112, 41367640, 66188224, 82735280, 132376448, 165470560, 330941120, 661882240]

約数ペア:

[(1, 661882240), (2, 330941120), (4, 165470560), (5, 132376448), (8, 82735280), (10, 66188224), (16, 41367640), (20, 33094112), (31, 21351040), (32, 20683820), (40, 16547056), (62, 10675520), (64, 10341910), (73, 9066880), (80, 8273528), (124, 5337760), (128, 5170955), (146, 4533440), (155, 4270208), (160, 4136764), (248, 2668880), (292, 2266720), (310, 2135104), (320, 2068382), (365, 1813376), (457, 1448320), (496, 1334440), (584, 1133360), (620, 1067552), (640, 1034191), (730, 906688), (914, 724160), (992, 667220), (1168, 566680), (1240, 533776), (1460, 453344), (1828, 362080), (1984, 333610), (2263, 292480), (2285, 289664), (2336, 283340), (2480, 266888), (2920, 226672), (3656, 181040), (3968, 166805), (4526, 146240), (4570, 144832), (4672, 141670), (4960, 133444), (5840, 113336), (7312, 90520), (9052, 73120), (9140, 72416), (9344, 70835), (9920, 66722), (11315, 58496), (11680, 56668), (14167, 46720), (14624, 45260), (18104, 36560), (18280, 36208), (19840, 33361), (22630, 29248), (23360, 28334)]