21490170

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55103}}^1$

素因数の和:55126

約数の個数: 32

約数和(自身を含む): 55544832

約数和(自身を除く): 34054662

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55103, 110206, 165309, 275515, 330618, 551030, 716339, 826545, 1432678, 1653090, 2149017, 3581695, 4298034, 7163390, 10745085, 21490170]

約数ペア:

[(1, 21490170), (2, 10745085), (3, 7163390), (5, 4298034), (6, 3581695), (10, 2149017), (13, 1653090), (15, 1432678), (26, 826545), (30, 716339), (39, 551030), (65, 330618), (78, 275515), (130, 165309), (195, 110206), (390, 55103)]