21945390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10303}}^1$

素因数の和:10384

約数の個数: 32

約数和(自身を含む): 53415936

約数和(自身を除く): 31470546

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130, 10303, 20606, 30909, 51515, 61818, 103030, 154545, 309090, 731513, 1463026, 2194539, 3657565, 4389078, 7315130, 10972695, 21945390]

約数ペア:

[(1, 21945390), (2, 10972695), (3, 7315130), (5, 4389078), (6, 3657565), (10, 2194539), (15, 1463026), (30, 731513), (71, 309090), (142, 154545), (213, 103030), (355, 61818), (426, 51515), (710, 30909), (1065, 20606), (2130, 10303)]