21518608

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:431

約数の個数: 40

約数和(自身を含む): 43275008

約数和(自身を除く): 21756400

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 163, 223, 296, 326, 446, 592, 652, 892, 1304, 1784, 2608, 3568, 6031, 8251, 12062, 16502, 24124, 33004, 36349, 48248, 66008, 72698, 96496, 132016, 145396, 290792, 581584, 1344913, 2689826, 5379652, 10759304, 21518608]

約数ペア:

[(1, 21518608), (2, 10759304), (4, 5379652), (8, 2689826), (16, 1344913), (37, 581584), (74, 290792), (148, 145396), (163, 132016), (223, 96496), (296, 72698), (326, 66008), (446, 48248), (592, 36349), (652, 33004), (892, 24124), (1304, 16502), (1784, 12062), (2608, 8251), (3568, 6031)]