18902620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 44643312

約数和(自身を除く): 25740692

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 107, 110, 121, 146, 214, 220, 242, 292, 365, 428, 484, 535, 605, 730, 803, 1070, 1177, 1210, 1460, 1606, 2140, 2354, 2420, 3212, 4015, 4708, 5885, 7811, 8030, 8833, 11770, 12947, 15622, 16060, 17666, 23540, 25894, 31244, 35332, 39055, 44165, 51788, 64735, 78110, 85921, 88330, 129470, 156220, 171842, 176660, 258940, 343684, 429605, 859210, 945131, 1718420, 1890262, 3780524, 4725655, 9451310, 18902620]

約数ペア:

[(1, 18902620), (2, 9451310), (4, 4725655), (5, 3780524), (10, 1890262), (11, 1718420), (20, 945131), (22, 859210), (44, 429605), (55, 343684), (73, 258940), (107, 176660), (110, 171842), (121, 156220), (146, 129470), (214, 88330), (220, 85921), (242, 78110), (292, 64735), (365, 51788), (428, 44165), (484, 39055), (535, 35332), (605, 31244), (730, 25894), (803, 23540), (1070, 17666), (1177, 16060), (1210, 15622), (1460, 12947), (1606, 11770), (2140, 8833), (2354, 8030), (2420, 7811), (3212, 5885), (4015, 4708)]