21261976

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{659}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 41382000

約数和(自身を除く): 20120024

約数列:

[1, 2, 4, 8, 37, 74, 109, 148, 218, 296, 436, 659, 872, 1318, 2636, 4033, 5272, 8066, 16132, 24383, 32264, 48766, 71831, 97532, 143662, 195064, 287324, 574648, 2657747, 5315494, 10630988, 21261976]

約数ペア:

[(1, 21261976), (2, 10630988), (4, 5315494), (8, 2657747), (37, 574648), (74, 287324), (109, 195064), (148, 143662), (218, 97532), (296, 71831), (436, 48766), (659, 32264), (872, 24383), (1318, 16132), (2636, 8066), (4033, 5272)]