19615820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{839}}^1$

素因数の和:1022

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 27800500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 167, 334, 668, 835, 839, 1169, 1670, 1678, 2338, 3340, 3356, 4195, 4676, 5845, 5873, 8390, 11690, 11746, 16780, 23380, 23492, 29365, 58730, 117460, 140113, 280226, 560452, 700565, 980791, 1401130, 1961582, 2802260, 3923164, 4903955, 9807910, 19615820]

約数ペア:

[(1, 19615820), (2, 9807910), (4, 4903955), (5, 3923164), (7, 2802260), (10, 1961582), (14, 1401130), (20, 980791), (28, 700565), (35, 560452), (70, 280226), (140, 140113), (167, 117460), (334, 58730), (668, 29365), (835, 23492), (839, 23380), (1169, 16780), (1670, 11746), (1678, 11690), (2338, 8390), (3340, 5873), (3356, 5845), (4195, 4676)]