16978520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{317}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 41670720

約数和(自身を除く): 24692200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 103, 104, 130, 206, 260, 317, 412, 515, 520, 634, 824, 1030, 1268, 1339, 1585, 2060, 2536, 2678, 3170, 4120, 4121, 5356, 6340, 6695, 8242, 10712, 12680, 13390, 16484, 20605, 26780, 32651, 32968, 41210, 53560, 65302, 82420, 130604, 163255, 164840, 261208, 326510, 424463, 653020, 848926, 1306040, 1697852, 2122315, 3395704, 4244630, 8489260, 16978520]

約数ペア:

[(1, 16978520), (2, 8489260), (4, 4244630), (5, 3395704), (8, 2122315), (10, 1697852), (13, 1306040), (20, 848926), (26, 653020), (40, 424463), (52, 326510), (65, 261208), (103, 164840), (104, 163255), (130, 130604), (206, 82420), (260, 65302), (317, 53560), (412, 41210), (515, 32968), (520, 32651), (634, 26780), (824, 20605), (1030, 16484), (1268, 13390), (1339, 12680), (1585, 10712), (2060, 8242), (2536, 6695), (2678, 6340), (3170, 5356), (4120, 4121)]