28220816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 65245824

約数和(自身を除く): 37025008

約数列:

[1, 2, 4, 8, 13, 16, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 184, 208, 221, 272, 299, 347, 368, 391, 442, 598, 694, 782, 884, 1196, 1388, 1564, 1768, 2392, 2776, 3128, 3536, 4511, 4784, 5083, 5552, 5899, 6256, 7981, 9022, 10166, 11798, 15962, 18044, 20332, 23596, 31924, 36088, 40664, 47192, 63848, 72176, 76687, 81328, 94384, 103753, 127696, 135677, 153374, 207506, 271354, 306748, 415012, 542708, 613496, 830024, 1085416, 1226992, 1660048, 1763801, 2170832, 3527602, 7055204, 14110408, 28220816]

約数ペア:

[(1, 28220816), (2, 14110408), (4, 7055204), (8, 3527602), (13, 2170832), (16, 1763801), (17, 1660048), (23, 1226992), (26, 1085416), (34, 830024), (46, 613496), (52, 542708), (68, 415012), (92, 306748), (104, 271354), (136, 207506), (184, 153374), (208, 135677), (221, 127696), (272, 103753), (299, 94384), (347, 81328), (368, 76687), (391, 72176), (442, 63848), (598, 47192), (694, 40664), (782, 36088), (884, 31924), (1196, 23596), (1388, 20332), (1564, 18044), (1768, 15962), (2392, 11798), (2776, 10166), (3128, 9022), (3536, 7981), (4511, 6256), (4784, 5899), (5083, 5552)]