21154648

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{433}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 41247360

約数和(自身を除く): 20092712

約数列:

[1, 2, 4, 8, 31, 62, 124, 197, 248, 394, 433, 788, 866, 1576, 1732, 3464, 6107, 12214, 13423, 24428, 26846, 48856, 53692, 85301, 107384, 170602, 341204, 682408, 2644331, 5288662, 10577324, 21154648]

約数ペア:

[(1, 21154648), (2, 10577324), (4, 5288662), (8, 2644331), (31, 682408), (62, 341204), (124, 170602), (197, 107384), (248, 85301), (394, 53692), (433, 48856), (788, 26846), (866, 24428), (1576, 13423), (1732, 12214), (3464, 6107)]