20622875

素因数分解:

$5^3\times 7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:86

約数の個数: 64

約数和(自身を含む): 33196800

約数和(自身を除く): 12573925

約数列:

[1, 5, 7, 13, 25, 35, 37, 49, 65, 91, 125, 175, 185, 245, 259, 325, 343, 455, 481, 637, 875, 925, 1225, 1295, 1625, 1715, 1813, 2275, 2405, 3185, 3367, 4459, 4625, 6125, 6475, 8575, 9065, 11375, 12025, 12691, 15925, 16835, 22295, 23569, 32375, 42875, 45325, 60125, 63455, 79625, 84175, 111475, 117845, 164983, 226625, 317275, 420875, 557375, 589225, 824915, 1586375, 2946125, 4124575, 20622875]

約数ペア:

[(1, 20622875), (5, 4124575), (7, 2946125), (13, 1586375), (25, 824915), (35, 589225), (37, 557375), (49, 420875), (65, 317275), (91, 226625), (125, 164983), (175, 117845), (185, 111475), (245, 84175), (259, 79625), (325, 63455), (343, 60125), (455, 45325), (481, 42875), (637, 32375), (875, 23569), (925, 22295), (1225, 16835), (1295, 15925), (1625, 12691), (1715, 12025), (1813, 11375), (2275, 9065), (2405, 8575), (3185, 6475), (3367, 6125), (4459, 4625)]