389874290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1087}}^1$

素因数の和:1227

約数の個数: 64

約数和(自身を含む): 789626880

約数和(自身を除く): 399752590

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 89, 130, 155, 178, 310, 403, 445, 806, 890, 1087, 1157, 2015, 2174, 2314, 2759, 4030, 5435, 5518, 5785, 10870, 11570, 13795, 14131, 27590, 28262, 33697, 35867, 67394, 70655, 71734, 96743, 141310, 168485, 179335, 193486, 336970, 358670, 438061, 483715, 876122, 967430, 1257659, 2190305, 2515318, 2999033, 4380610, 5998066, 6288295, 12576590, 14995165, 29990330, 38987429, 77974858, 194937145, 389874290]

約数ペア:

[(1, 389874290), (2, 194937145), (5, 77974858), (10, 38987429), (13, 29990330), (26, 14995165), (31, 12576590), (62, 6288295), (65, 5998066), (89, 4380610), (130, 2999033), (155, 2515318), (178, 2190305), (310, 1257659), (403, 967430), (445, 876122), (806, 483715), (890, 438061), (1087, 358670), (1157, 336970), (2015, 193486), (2174, 179335), (2314, 168485), (2759, 141310), (4030, 96743), (5435, 71734), (5518, 70655), (5785, 67394), (10870, 35867), (11570, 33697), (13795, 28262), (14131, 27590)]