21449295

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{457}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 42868800

約数和(自身を除く): 21419505

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 149, 315, 447, 457, 745, 1043, 1341, 1371, 2235, 2285, 3129, 3199, 4113, 5215, 6705, 6855, 9387, 9597, 15645, 15995, 20565, 28791, 46935, 47985, 68093, 143955, 204279, 340465, 476651, 612837, 1021395, 1429953, 2383255, 3064185, 4289859, 7149765, 21449295]

約数ペア:

[(1, 21449295), (3, 7149765), (5, 4289859), (7, 3064185), (9, 2383255), (15, 1429953), (21, 1021395), (35, 612837), (45, 476651), (63, 340465), (105, 204279), (149, 143955), (315, 68093), (447, 47985), (457, 46935), (745, 28791), (1043, 20565), (1341, 15995), (1371, 15645), (2235, 9597), (2285, 9387), (3129, 6855), (3199, 6705), (4113, 5215)]