256816144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1231}}^1$

素因数の和:1328

約数の個数: 80

約数和(自身を含む): 577463040

約数和(自身を除く): 320646896

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 59, 68, 104, 118, 136, 208, 221, 236, 272, 442, 472, 767, 884, 944, 1003, 1231, 1534, 1768, 2006, 2462, 3068, 3536, 4012, 4924, 6136, 8024, 9848, 12272, 13039, 16003, 16048, 19696, 20927, 26078, 32006, 41854, 52156, 64012, 72629, 83708, 104312, 128024, 145258, 167416, 208624, 256048, 272051, 290516, 334832, 544102, 581032, 944177, 1088204, 1162064, 1234693, 1888354, 2176408, 2469386, 3776708, 4352816, 4938772, 7553416, 9877544, 15106832, 16051009, 19755088, 32102018, 64204036, 128408072, 256816144]

約数ペア:

[(1, 256816144), (2, 128408072), (4, 64204036), (8, 32102018), (13, 19755088), (16, 16051009), (17, 15106832), (26, 9877544), (34, 7553416), (52, 4938772), (59, 4352816), (68, 3776708), (104, 2469386), (118, 2176408), (136, 1888354), (208, 1234693), (221, 1162064), (236, 1088204), (272, 944177), (442, 581032), (472, 544102), (767, 334832), (884, 290516), (944, 272051), (1003, 256048), (1231, 208624), (1534, 167416), (1768, 145258), (2006, 128024), (2462, 104312), (3068, 83708), (3536, 72629), (4012, 64012), (4924, 52156), (6136, 41854), (8024, 32006), (9848, 26078), (12272, 20927), (13039, 19696), (16003, 16048)]