28721104992

素因数分解:

$2^5\times 3^2\times {\mathrm{421}}^1\times {\mathrm{236879}}^1$

素因数の和:237316

約数の個数: 72

約数和(自身を含む): 81869991840

約数和(自身を除く): 53148886848

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288, 421, 842, 1263, 1684, 2526, 3368, 3789, 5052, 6736, 7578, 10104, 13472, 15156, 20208, 30312, 40416, 60624, 121248, 236879, 473758, 710637, 947516, 1421274, 1895032, 2131911, 2842548, 3790064, 4263822, 5685096, 7580128, 8527644, 11370192, 17055288, 22740384, 34110576, 68221152, 99726059, 199452118, 299178177, 398904236, 598356354, 797808472, 897534531, 1196712708, 1595616944, 1795069062, 2393425416, 3191233888, 3590138124, 4786850832, 7180276248, 9573701664, 14360552496, 28721104992]

約数ペア:

[(1, 28721104992), (2, 14360552496), (3, 9573701664), (4, 7180276248), (6, 4786850832), (8, 3590138124), (9, 3191233888), (12, 2393425416), (16, 1795069062), (18, 1595616944), (24, 1196712708), (32, 897534531), (36, 797808472), (48, 598356354), (72, 398904236), (96, 299178177), (144, 199452118), (288, 99726059), (421, 68221152), (842, 34110576), (1263, 22740384), (1684, 17055288), (2526, 11370192), (3368, 8527644), (3789, 7580128), (5052, 5685096), (6736, 4263822), (7578, 3790064), (10104, 2842548), (13472, 2131911), (15156, 1895032), (20208, 1421274), (30312, 947516), (40416, 710637), (60624, 473758), (121248, 236879)]