28652920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{11743}}^1$

素因数の和:11815

約数の個数: 32

約数和(自身を含む): 65531520

約数和(自身を除く): 36878600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 11743, 23486, 46972, 58715, 93944, 117430, 234860, 469720, 716323, 1432646, 2865292, 3581615, 5730584, 7163230, 14326460, 28652920]

約数ペア:

[(1, 28652920), (2, 14326460), (4, 7163230), (5, 5730584), (8, 3581615), (10, 2865292), (20, 1432646), (40, 716323), (61, 469720), (122, 234860), (244, 117430), (305, 93944), (488, 58715), (610, 46972), (1220, 23486), (2440, 11743)]