206870980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1\times {\mathrm{421}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 442391040

約数和(自身を除く): 235520060

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 311, 316, 395, 421, 622, 790, 842, 1244, 1555, 1580, 1684, 2105, 3110, 4210, 6220, 8420, 24569, 33259, 49138, 66518, 98276, 122845, 130931, 133036, 166295, 245690, 261862, 332590, 491380, 523724, 654655, 665180, 1309310, 2618620, 10343549, 20687098, 41374196, 51717745, 103435490, 206870980]

約数ペア:

[(1, 206870980), (2, 103435490), (4, 51717745), (5, 41374196), (10, 20687098), (20, 10343549), (79, 2618620), (158, 1309310), (311, 665180), (316, 654655), (395, 523724), (421, 491380), (622, 332590), (790, 261862), (842, 245690), (1244, 166295), (1555, 133036), (1580, 130931), (1684, 122845), (2105, 98276), (3110, 66518), (4210, 49138), (6220, 33259), (8420, 24569)]