21559005

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 40687920

約数和(自身を除く): 19128915

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 137, 195, 269, 411, 585, 685, 807, 1233, 1345, 1781, 2055, 2421, 3497, 4035, 5343, 6165, 8905, 10491, 12105, 16029, 17485, 26715, 31473, 36853, 52455, 80145, 110559, 157365, 184265, 331677, 479089, 552795, 1437267, 1658385, 2395445, 4311801, 7186335, 21559005]

約数ペア:

[(1, 21559005), (3, 7186335), (5, 4311801), (9, 2395445), (13, 1658385), (15, 1437267), (39, 552795), (45, 479089), (65, 331677), (117, 184265), (137, 157365), (195, 110559), (269, 80145), (411, 52455), (585, 36853), (685, 31473), (807, 26715), (1233, 17485), (1345, 16029), (1781, 12105), (2055, 10491), (2421, 8905), (3497, 6165), (4035, 5343)]