20963750

素因数分解:

$2^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:594

約数の個数: 40

約数和(自身を含む): 40636992

約数和(自身を除く): 19673242

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 541, 625, 775, 1082, 1250, 1550, 2705, 3875, 5410, 7750, 13525, 16771, 19375, 27050, 33542, 38750, 67625, 83855, 135250, 167710, 338125, 419275, 676250, 838550, 2096375, 4192750, 10481875, 20963750]

約数ペア:

[(1, 20963750), (2, 10481875), (5, 4192750), (10, 2096375), (25, 838550), (31, 676250), (50, 419275), (62, 338125), (125, 167710), (155, 135250), (250, 83855), (310, 67625), (541, 38750), (625, 33542), (775, 27050), (1082, 19375), (1250, 16771), (1550, 13525), (2705, 7750), (3875, 5410)]