78131456

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1381}}^1$

素因数の和:1427

約数の個数: 72

約数和(自身を含む): 177962904

約数和(自身を除く): 99831448

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 208, 221, 256, 272, 416, 442, 544, 832, 884, 1088, 1381, 1664, 1768, 2176, 2762, 3328, 3536, 4352, 5524, 7072, 11048, 14144, 17953, 22096, 23477, 28288, 35906, 44192, 46954, 56576, 71812, 88384, 93908, 143624, 176768, 187816, 287248, 305201, 353536, 375632, 574496, 610402, 751264, 1148992, 1220804, 1502528, 2297984, 2441608, 3005056, 4595968, 4883216, 6010112, 9766432, 19532864, 39065728, 78131456]

約数ペア:

[(1, 78131456), (2, 39065728), (4, 19532864), (8, 9766432), (13, 6010112), (16, 4883216), (17, 4595968), (26, 3005056), (32, 2441608), (34, 2297984), (52, 1502528), (64, 1220804), (68, 1148992), (104, 751264), (128, 610402), (136, 574496), (208, 375632), (221, 353536), (256, 305201), (272, 287248), (416, 187816), (442, 176768), (544, 143624), (832, 93908), (884, 88384), (1088, 71812), (1381, 56576), (1664, 46954), (1768, 44192), (2176, 35906), (2762, 28288), (3328, 23477), (3536, 22096), (4352, 17953), (5524, 14144), (7072, 11048)]