21684195

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{367}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 40989312

約数和(自身を除く): 19305117

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 101, 117, 195, 303, 367, 505, 585, 909, 1101, 1313, 1515, 1835, 3303, 3939, 4545, 4771, 5505, 6565, 11817, 14313, 16515, 19695, 23855, 37067, 42939, 59085, 71565, 111201, 185335, 214695, 333603, 481871, 556005, 1445613, 1668015, 2409355, 4336839, 7228065, 21684195]

約数ペア:

[(1, 21684195), (3, 7228065), (5, 4336839), (9, 2409355), (13, 1668015), (15, 1445613), (39, 556005), (45, 481871), (65, 333603), (101, 214695), (117, 185335), (195, 111201), (303, 71565), (367, 59085), (505, 42939), (585, 37067), (909, 23855), (1101, 19695), (1313, 16515), (1515, 14313), (1835, 11817), (3303, 6565), (3939, 5505), (4545, 4771)]