21212930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1151}}^1$

素因数の和:1274

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19429630

約数列:

[1, 2, 5, 10, 19, 38, 95, 97, 190, 194, 485, 970, 1151, 1843, 2302, 3686, 5755, 9215, 11510, 18430, 21869, 43738, 109345, 111647, 218690, 223294, 558235, 1116470, 2121293, 4242586, 10606465, 21212930]

約数ペア:

[(1, 21212930), (2, 10606465), (5, 4242586), (10, 2121293), (19, 1116470), (38, 558235), (95, 223294), (97, 218690), (190, 111647), (194, 109345), (485, 43738), (970, 21869), (1151, 18430), (1843, 11510), (2302, 9215), (3686, 5755)]