858489580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{499}}^1\times {\mathrm{509}}^1$

素因数の和:1043

約数の個数: 72

約数和(自身を含む): 1959930000

約数和(自身を除く): 1101440420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 499, 509, 676, 845, 998, 1018, 1690, 1996, 2036, 2495, 2545, 3380, 4990, 5090, 6487, 6617, 9980, 10180, 12974, 13234, 25948, 26468, 32435, 33085, 64870, 66170, 84331, 86021, 129740, 132340, 168662, 172042, 253991, 337324, 344084, 421655, 430105, 507982, 843310, 860210, 1015964, 1269955, 1686620, 1720420, 2539910, 3301883, 5079820, 6603766, 13207532, 16509415, 33018830, 42924479, 66037660, 85848958, 171697916, 214622395, 429244790, 858489580]

約数ペア:

[(1, 858489580), (2, 429244790), (4, 214622395), (5, 171697916), (10, 85848958), (13, 66037660), (20, 42924479), (26, 33018830), (52, 16509415), (65, 13207532), (130, 6603766), (169, 5079820), (260, 3301883), (338, 2539910), (499, 1720420), (509, 1686620), (676, 1269955), (845, 1015964), (998, 860210), (1018, 843310), (1690, 507982), (1996, 430105), (2036, 421655), (2495, 344084), (2545, 337324), (3380, 253991), (4990, 172042), (5090, 168662), (6487, 132340), (6617, 129740), (9980, 86021), (10180, 84331), (12974, 66170), (13234, 64870), (25948, 33085), (26468, 32435)]