21261016

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{971}}^1$

素因数の和:1024

約数の個数: 64

約数和(自身を含む): 50388480

約数和(自身を除く): 29127464

約数列:

[1, 2, 4, 7, 8, 14, 17, 23, 28, 34, 46, 56, 68, 92, 119, 136, 161, 184, 238, 322, 391, 476, 644, 782, 952, 971, 1288, 1564, 1942, 2737, 3128, 3884, 5474, 6797, 7768, 10948, 13594, 16507, 21896, 22333, 27188, 33014, 44666, 54376, 66028, 89332, 115549, 132056, 156331, 178664, 231098, 312662, 379661, 462196, 625324, 759322, 924392, 1250648, 1518644, 2657627, 3037288, 5315254, 10630508, 21261016]

約数ペア:

[(1, 21261016), (2, 10630508), (4, 5315254), (7, 3037288), (8, 2657627), (14, 1518644), (17, 1250648), (23, 924392), (28, 759322), (34, 625324), (46, 462196), (56, 379661), (68, 312662), (92, 231098), (119, 178664), (136, 156331), (161, 132056), (184, 115549), (238, 89332), (322, 66028), (391, 54376), (476, 44666), (644, 33014), (782, 27188), (952, 22333), (971, 21896), (1288, 16507), (1564, 13594), (1942, 10948), (2737, 7768), (3128, 6797), (3884, 5474)]