20418080

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3449}}^1$

素因数の和:3501

約数の個数: 48

約数和(自身を含む): 49555800

約数和(自身を除く): 29137720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3449, 5920, 6898, 13796, 17245, 27592, 34490, 55184, 68980, 110368, 127613, 137960, 255226, 275920, 510452, 551840, 638065, 1020904, 1276130, 2041808, 2552260, 4083616, 5104520, 10209040, 20418080]

約数ペア:

[(1, 20418080), (2, 10209040), (4, 5104520), (5, 4083616), (8, 2552260), (10, 2041808), (16, 1276130), (20, 1020904), (32, 638065), (37, 551840), (40, 510452), (74, 275920), (80, 255226), (148, 137960), (160, 127613), (185, 110368), (296, 68980), (370, 55184), (592, 34490), (740, 27592), (1184, 17245), (1480, 13796), (2960, 6898), (3449, 5920)]