639975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:96

約数の個数: 48

約数和(自身を含む): 1285632

約数和(自身を除く): 645657

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 53, 69, 75, 105, 115, 159, 161, 175, 265, 345, 371, 483, 525, 575, 795, 805, 1113, 1219, 1325, 1725, 1855, 2415, 3657, 3975, 4025, 5565, 6095, 8533, 9275, 12075, 18285, 25599, 27825, 30475, 42665, 91425, 127995, 213325, 639975]

約数ペア:

[(1, 639975), (3, 213325), (5, 127995), (7, 91425), (15, 42665), (21, 30475), (23, 27825), (25, 25599), (35, 18285), (53, 12075), (69, 9275), (75, 8533), (105, 6095), (115, 5565), (159, 4025), (161, 3975), (175, 3657), (265, 2415), (345, 1855), (371, 1725), (483, 1325), (525, 1219), (575, 1113), (795, 805)]