20456260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 27806780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 107, 110, 121, 158, 214, 220, 242, 316, 395, 428, 484, 535, 605, 790, 869, 1070, 1177, 1210, 1580, 1738, 2140, 2354, 2420, 3476, 4345, 4708, 5885, 8453, 8690, 9559, 11770, 12947, 16906, 17380, 19118, 23540, 25894, 33812, 38236, 42265, 47795, 51788, 64735, 84530, 92983, 95590, 129470, 169060, 185966, 191180, 258940, 371932, 464915, 929830, 1022813, 1859660, 2045626, 4091252, 5114065, 10228130, 20456260]

約数ペア:

[(1, 20456260), (2, 10228130), (4, 5114065), (5, 4091252), (10, 2045626), (11, 1859660), (20, 1022813), (22, 929830), (44, 464915), (55, 371932), (79, 258940), (107, 191180), (110, 185966), (121, 169060), (158, 129470), (214, 95590), (220, 92983), (242, 84530), (316, 64735), (395, 51788), (428, 47795), (484, 42265), (535, 38236), (605, 33812), (790, 25894), (869, 23540), (1070, 19118), (1177, 17380), (1210, 16906), (1580, 12947), (1738, 11770), (2140, 9559), (2354, 8690), (2420, 8453), (3476, 5885), (4345, 4708)]