20172779775

素因数分解:

$3^2\times 5^2\times {\mathrm{113}}^1\times {\mathrm{193}}^1\times {\mathrm{4111}}^1$

素因数の和:4433

約数の個数: 72

約数和(自身を含む): 36649219776

約数和(自身を除く): 16476440001

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 113, 193, 225, 339, 565, 579, 965, 1017, 1695, 1737, 2825, 2895, 4111, 4825, 5085, 8475, 8685, 12333, 14475, 20555, 21809, 25425, 36999, 43425, 61665, 65427, 102775, 109045, 184995, 196281, 308325, 327135, 464543, 545225, 793423, 924975, 981405, 1393629, 1635675, 2322715, 2380269, 3967115, 4180887, 4907025, 6968145, 7140807, 11613575, 11901345, 19835575, 20904435, 34840725, 35704035, 59506725, 89656799, 104522175, 178520175, 268970397, 448283995, 806911191, 1344851985, 2241419975, 4034555955, 6724259925, 20172779775]

約数ペア:

[(1, 20172779775), (3, 6724259925), (5, 4034555955), (9, 2241419975), (15, 1344851985), (25, 806911191), (45, 448283995), (75, 268970397), (113, 178520175), (193, 104522175), (225, 89656799), (339, 59506725), (565, 35704035), (579, 34840725), (965, 20904435), (1017, 19835575), (1695, 11901345), (1737, 11613575), (2825, 7140807), (2895, 6968145), (4111, 4907025), (4825, 4180887), (5085, 3967115), (8475, 2380269), (8685, 2322715), (12333, 1635675), (14475, 1393629), (20555, 981405), (21809, 924975), (25425, 793423), (36999, 545225), (43425, 464543), (61665, 327135), (65427, 308325), (102775, 196281), (109045, 184995)]