21908720

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1583}}^1$

素因数の和:1769

約数の個数: 40

約数和(自身を含む): 51264576

約数和(自身を除く): 29355856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1384, 1583, 1730, 2768, 3166, 3460, 6332, 6920, 7915, 12664, 13840, 15830, 25328, 31660, 63320, 126640, 273859, 547718, 1095436, 1369295, 2190872, 2738590, 4381744, 5477180, 10954360, 21908720]

約数ペア:

[(1, 21908720), (2, 10954360), (4, 5477180), (5, 4381744), (8, 2738590), (10, 2190872), (16, 1369295), (20, 1095436), (40, 547718), (80, 273859), (173, 126640), (346, 63320), (692, 31660), (865, 25328), (1384, 15830), (1583, 13840), (1730, 12664), (2768, 7915), (3166, 6920), (3460, 6332)]