20803250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 43321824

約数和(自身を除く): 22518574

約数列:

[1, 2, 5, 10, 13, 25, 26, 37, 50, 65, 74, 125, 130, 173, 185, 250, 325, 346, 370, 481, 650, 865, 925, 962, 1625, 1730, 1850, 2249, 2405, 3250, 4325, 4498, 4625, 4810, 6401, 8650, 9250, 11245, 12025, 12802, 21625, 22490, 24050, 32005, 43250, 56225, 60125, 64010, 83213, 112450, 120250, 160025, 166426, 281125, 320050, 416065, 562250, 800125, 832130, 1600250, 2080325, 4160650, 10401625, 20803250]

約数ペア:

[(1, 20803250), (2, 10401625), (5, 4160650), (10, 2080325), (13, 1600250), (25, 832130), (26, 800125), (37, 562250), (50, 416065), (65, 320050), (74, 281125), (125, 166426), (130, 160025), (173, 120250), (185, 112450), (250, 83213), (325, 64010), (346, 60125), (370, 56225), (481, 43250), (650, 32005), (865, 24050), (925, 22490), (962, 21625), (1625, 12802), (1730, 12025), (1850, 11245), (2249, 9250), (2405, 8650), (3250, 6401), (4325, 4810), (4498, 4625)]