21961390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4643}}^1$

素因数の和:4704

約数の個数: 32

約数和(自身を含む): 44136576

約数和(自身を除く): 22175186

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4643, 4730, 9286, 23215, 46430, 51073, 102146, 199649, 255365, 399298, 510730, 998245, 1996490, 2196139, 4392278, 10980695, 21961390]

約数ペア:

[(1, 21961390), (2, 10980695), (5, 4392278), (10, 2196139), (11, 1996490), (22, 998245), (43, 510730), (55, 399298), (86, 255365), (110, 199649), (215, 102146), (430, 51073), (473, 46430), (946, 23215), (2365, 9286), (4643, 4730)]