21117224

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 40715400

約数和(自身を除く): 19598176

約数列:

[1, 2, 4, 8, 61, 109, 122, 218, 244, 397, 436, 488, 794, 872, 1588, 3176, 6649, 13298, 24217, 26596, 43273, 48434, 53192, 86546, 96868, 173092, 193736, 346184, 2639653, 5279306, 10558612, 21117224]

約数ペア:

[(1, 21117224), (2, 10558612), (4, 5279306), (8, 2639653), (61, 346184), (109, 193736), (122, 173092), (218, 96868), (244, 86546), (397, 53192), (436, 48434), (488, 43273), (794, 26596), (872, 24217), (1588, 13298), (3176, 6649)]