21382640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11621}}^1$

素因数の和:11657

約数の個数: 40

約数和(自身を含む): 51880608

約数和(自身を除く): 30497968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11621, 23242, 46484, 58105, 92968, 116210, 185936, 232420, 267283, 464840, 534566, 929680, 1069132, 1336415, 2138264, 2672830, 4276528, 5345660, 10691320, 21382640]

約数ペア:

[(1, 21382640), (2, 10691320), (4, 5345660), (5, 4276528), (8, 2672830), (10, 2138264), (16, 1336415), (20, 1069132), (23, 929680), (40, 534566), (46, 464840), (80, 267283), (92, 232420), (115, 185936), (184, 116210), (230, 92968), (368, 58105), (460, 46484), (920, 23242), (1840, 11621)]