320804920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{1459}}^1$

素因数の和:1732

約数の個数: 64

約数和(自身を含む): 756864000

約数和(自身を除く): 436059080

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 239, 460, 478, 920, 956, 1195, 1459, 1912, 2390, 2918, 4780, 5497, 5836, 7295, 9560, 10994, 11672, 14590, 21988, 27485, 29180, 33557, 43976, 54970, 58360, 67114, 109940, 134228, 167785, 219880, 268456, 335570, 348701, 671140, 697402, 1342280, 1394804, 1743505, 2789608, 3487010, 6974020, 8020123, 13948040, 16040246, 32080492, 40100615, 64160984, 80201230, 160402460, 320804920]

約数ペア:

[(1, 320804920), (2, 160402460), (4, 80201230), (5, 64160984), (8, 40100615), (10, 32080492), (20, 16040246), (23, 13948040), (40, 8020123), (46, 6974020), (92, 3487010), (115, 2789608), (184, 1743505), (230, 1394804), (239, 1342280), (460, 697402), (478, 671140), (920, 348701), (956, 335570), (1195, 268456), (1459, 219880), (1912, 167785), (2390, 134228), (2918, 109940), (4780, 67114), (5497, 58360), (5836, 54970), (7295, 43976), (9560, 33557), (10994, 29180), (11672, 27485), (14590, 21988)]