21372435

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3571}}^1$

素因数の和:3608

約数の個数: 48

約数和(自身を含む): 44578560

約数和(自身を除く): 23206125

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3571, 5985, 10713, 17855, 24997, 32139, 53565, 67849, 74991, 124985, 160695, 203547, 224973, 339245, 374955, 474943, 610641, 1017735, 1124865, 1424829, 2374715, 3053205, 4274487, 7124145, 21372435]

約数ペア:

[(1, 21372435), (3, 7124145), (5, 4274487), (7, 3053205), (9, 2374715), (15, 1424829), (19, 1124865), (21, 1017735), (35, 610641), (45, 474943), (57, 374955), (63, 339245), (95, 224973), (105, 203547), (133, 160695), (171, 124985), (285, 74991), (315, 67849), (399, 53565), (665, 32139), (855, 24997), (1197, 17855), (1995, 10713), (3571, 5985)]