21318768

素因数分解:

$2^4\times 3^3\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:887

約数の個数: 80

約数和(自身を含む): 62272800

約数和(自身を除く): 40954032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 61, 72, 108, 122, 144, 183, 216, 244, 366, 432, 488, 549, 732, 809, 976, 1098, 1464, 1618, 1647, 2196, 2427, 2928, 3236, 3294, 4392, 4854, 6472, 6588, 7281, 8784, 9708, 12944, 13176, 14562, 19416, 21843, 26352, 29124, 38832, 43686, 49349, 58248, 87372, 98698, 116496, 148047, 174744, 197396, 296094, 349488, 394792, 444141, 592188, 789584, 888282, 1184376, 1332423, 1776564, 2368752, 2664846, 3553128, 5329692, 7106256, 10659384, 21318768]

約数ペア:

[(1, 21318768), (2, 10659384), (3, 7106256), (4, 5329692), (6, 3553128), (8, 2664846), (9, 2368752), (12, 1776564), (16, 1332423), (18, 1184376), (24, 888282), (27, 789584), (36, 592188), (48, 444141), (54, 394792), (61, 349488), (72, 296094), (108, 197396), (122, 174744), (144, 148047), (183, 116496), (216, 98698), (244, 87372), (366, 58248), (432, 49349), (488, 43686), (549, 38832), (732, 29124), (809, 26352), (976, 21843), (1098, 19416), (1464, 14562), (1618, 13176), (1647, 12944), (2196, 9708), (2427, 8784), (2928, 7281), (3236, 6588), (3294, 6472), (4392, 4854)]