17971875

素因数分解:

$3^4\times 5^5\times {\mathrm{71}}^1$

素因数の和:108

約数の個数: 60

約数和(自身を含む): 34029072

約数和(自身を除く): 16057197

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 71, 75, 81, 125, 135, 213, 225, 355, 375, 405, 625, 639, 675, 1065, 1125, 1775, 1875, 1917, 2025, 3125, 3195, 3375, 5325, 5625, 5751, 8875, 9375, 9585, 10125, 15975, 16875, 26625, 28125, 28755, 44375, 47925, 50625, 79875, 84375, 133125, 143775, 221875, 239625, 253125, 399375, 665625, 718875, 1198125, 1996875, 3594375, 5990625, 17971875]

約数ペア:

[(1, 17971875), (3, 5990625), (5, 3594375), (9, 1996875), (15, 1198125), (25, 718875), (27, 665625), (45, 399375), (71, 253125), (75, 239625), (81, 221875), (125, 143775), (135, 133125), (213, 84375), (225, 79875), (355, 50625), (375, 47925), (405, 44375), (625, 28755), (639, 28125), (675, 26625), (1065, 16875), (1125, 15975), (1775, 10125), (1875, 9585), (1917, 9375), (2025, 8875), (3125, 5751), (3195, 5625), (3375, 5325)]