20017250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 22439710

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 125, 145, 250, 251, 275, 290, 319, 502, 550, 638, 725, 1255, 1375, 1450, 1595, 2510, 2750, 2761, 3190, 3625, 5522, 6275, 7250, 7279, 7975, 12550, 13805, 14558, 15950, 27610, 31375, 36395, 39875, 62750, 69025, 72790, 79750, 80069, 138050, 160138, 181975, 345125, 363950, 400345, 690250, 800690, 909875, 1819750, 2001725, 4003450, 10008625, 20017250]

約数ペア:

[(1, 20017250), (2, 10008625), (5, 4003450), (10, 2001725), (11, 1819750), (22, 909875), (25, 800690), (29, 690250), (50, 400345), (55, 363950), (58, 345125), (110, 181975), (125, 160138), (145, 138050), (250, 80069), (251, 79750), (275, 72790), (290, 69025), (319, 62750), (502, 39875), (550, 36395), (638, 31375), (725, 27610), (1255, 15950), (1375, 14558), (1450, 13805), (1595, 12550), (2510, 7975), (2750, 7279), (2761, 7250), (3190, 6275), (3625, 5522)]