21307936

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:194

約数の個数: 96

約数和(自身を含む): 50295168

約数和(自身を除く): 28987232

約数列:

[1, 2, 4, 8, 13, 16, 17, 23, 26, 32, 34, 46, 52, 68, 92, 104, 131, 136, 184, 208, 221, 262, 272, 299, 368, 391, 416, 442, 524, 544, 598, 736, 782, 884, 1048, 1196, 1564, 1703, 1768, 2096, 2227, 2392, 3013, 3128, 3406, 3536, 4192, 4454, 4784, 5083, 6026, 6256, 6812, 7072, 8908, 9568, 10166, 12052, 12512, 13624, 17816, 20332, 24104, 27248, 28951, 35632, 39169, 40664, 48208, 51221, 54496, 57902, 71264, 78338, 81328, 96416, 102442, 115804, 156676, 162656, 204884, 231608, 313352, 409768, 463216, 626704, 665873, 819536, 926432, 1253408, 1331746, 1639072, 2663492, 5326984, 10653968, 21307936]

約数ペア:

[(1, 21307936), (2, 10653968), (4, 5326984), (8, 2663492), (13, 1639072), (16, 1331746), (17, 1253408), (23, 926432), (26, 819536), (32, 665873), (34, 626704), (46, 463216), (52, 409768), (68, 313352), (92, 231608), (104, 204884), (131, 162656), (136, 156676), (184, 115804), (208, 102442), (221, 96416), (262, 81328), (272, 78338), (299, 71264), (368, 57902), (391, 54496), (416, 51221), (442, 48208), (524, 40664), (544, 39169), (598, 35632), (736, 28951), (782, 27248), (884, 24104), (1048, 20332), (1196, 17816), (1564, 13624), (1703, 12512), (1768, 12052), (2096, 10166), (2227, 9568), (2392, 8908), (3013, 7072), (3128, 6812), (3406, 6256), (3536, 6026), (4192, 5083), (4454, 4784)]