154978520

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{9203}}^1$

素因数の和:9635

約数の個数: 32

約数和(自身を含む): 349567920

約数和(自身を除く): 194589400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 9203, 16840, 18406, 36812, 46015, 73624, 92030, 184060, 368120, 3874463, 7748926, 15497852, 19372315, 30995704, 38744630, 77489260, 154978520]

約数ペア:

[(1, 154978520), (2, 77489260), (4, 38744630), (5, 30995704), (8, 19372315), (10, 15497852), (20, 7748926), (40, 3874463), (421, 368120), (842, 184060), (1684, 92030), (2105, 73624), (3368, 46015), (4210, 36812), (8420, 18406), (9203, 16840)]