18185625

素因数分解:

$3^2\times 5^4\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 60

約数和(自身を含む): 33992244

約数和(自身を除く): 15806619

約数列:

[1, 3, 5, 9, 15, 25, 45, 53, 61, 75, 125, 159, 183, 225, 265, 305, 375, 477, 549, 625, 795, 915, 1125, 1325, 1525, 1875, 2385, 2745, 3233, 3975, 4575, 5625, 6625, 7625, 9699, 11925, 13725, 16165, 19875, 22875, 29097, 33125, 38125, 48495, 59625, 68625, 80825, 99375, 114375, 145485, 242475, 298125, 343125, 404125, 727425, 1212375, 2020625, 3637125, 6061875, 18185625]

約数ペア:

[(1, 18185625), (3, 6061875), (5, 3637125), (9, 2020625), (15, 1212375), (25, 727425), (45, 404125), (53, 343125), (61, 298125), (75, 242475), (125, 145485), (159, 114375), (183, 99375), (225, 80825), (265, 68625), (305, 59625), (375, 48495), (477, 38125), (549, 33125), (625, 29097), (795, 22875), (915, 19875), (1125, 16165), (1325, 13725), (1525, 11925), (1875, 9699), (2385, 7625), (2745, 6625), (3233, 5625), (3975, 4575)]