21417968

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:103

約数の個数: 120

約数和(自身を含む): 52642464

約数和(自身を除く): 31224496

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 23, 26, 37, 44, 46, 52, 74, 88, 92, 104, 121, 143, 148, 176, 184, 208, 242, 253, 286, 296, 299, 368, 407, 481, 484, 506, 572, 592, 598, 814, 851, 962, 968, 1012, 1144, 1196, 1573, 1628, 1702, 1924, 1936, 2024, 2288, 2392, 2783, 3146, 3256, 3289, 3404, 3848, 4048, 4477, 4784, 5291, 5566, 6292, 6512, 6578, 6808, 7696, 8954, 9361, 10582, 11063, 11132, 12584, 13156, 13616, 17908, 18722, 21164, 22126, 22264, 25168, 26312, 35816, 36179, 37444, 42328, 44252, 44528, 52624, 58201, 71632, 72358, 74888, 84656, 88504, 102971, 116402, 121693, 144716, 149776, 177008, 205942, 232804, 243386, 289432, 411884, 465608, 486772, 578864, 823768, 931216, 973544, 1338623, 1647536, 1947088, 2677246, 5354492, 10708984, 21417968]

約数ペア:

[(1, 21417968), (2, 10708984), (4, 5354492), (8, 2677246), (11, 1947088), (13, 1647536), (16, 1338623), (22, 973544), (23, 931216), (26, 823768), (37, 578864), (44, 486772), (46, 465608), (52, 411884), (74, 289432), (88, 243386), (92, 232804), (104, 205942), (121, 177008), (143, 149776), (148, 144716), (176, 121693), (184, 116402), (208, 102971), (242, 88504), (253, 84656), (286, 74888), (296, 72358), (299, 71632), (368, 58201), (407, 52624), (481, 44528), (484, 44252), (506, 42328), (572, 37444), (592, 36179), (598, 35816), (814, 26312), (851, 25168), (962, 22264), (968, 22126), (1012, 21164), (1144, 18722), (1196, 17908), (1573, 13616), (1628, 13156), (1702, 12584), (1924, 11132), (1936, 11063), (2024, 10582), (2288, 9361), (2392, 8954), (2783, 7696), (3146, 6808), (3256, 6578), (3289, 6512), (3404, 6292), (3848, 5566), (4048, 5291), (4477, 4784)]