19724625

素因数分解:

$3^2\times 5^3\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 48

約数和(自身を含む): 36138960

約数和(自身を除く): 16414335

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 89, 125, 197, 225, 267, 375, 445, 591, 801, 985, 1125, 1335, 1773, 2225, 2955, 4005, 4925, 6675, 8865, 11125, 14775, 17533, 20025, 24625, 33375, 44325, 52599, 73875, 87665, 100125, 157797, 221625, 262995, 438325, 788985, 1314975, 2191625, 3944925, 6574875, 19724625]

約数ペア:

[(1, 19724625), (3, 6574875), (5, 3944925), (9, 2191625), (15, 1314975), (25, 788985), (45, 438325), (75, 262995), (89, 221625), (125, 157797), (197, 100125), (225, 87665), (267, 73875), (375, 52599), (445, 44325), (591, 33375), (801, 24625), (985, 20025), (1125, 17533), (1335, 14775), (1773, 11125), (2225, 8865), (2955, 6675), (4005, 4925)]