20392140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2281}}^1$

素因数の和:2442

約数の個数: 48

約数和(自身を含む): 57506400

約数和(自身を除く): 37114260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 149, 298, 447, 596, 745, 894, 1490, 1788, 2235, 2281, 2980, 4470, 4562, 6843, 8940, 9124, 11405, 13686, 22810, 27372, 34215, 45620, 68430, 136860, 339869, 679738, 1019607, 1359476, 1699345, 2039214, 3398690, 4078428, 5098035, 6797380, 10196070, 20392140]

約数ペア:

[(1, 20392140), (2, 10196070), (3, 6797380), (4, 5098035), (5, 4078428), (6, 3398690), (10, 2039214), (12, 1699345), (15, 1359476), (20, 1019607), (30, 679738), (60, 339869), (149, 136860), (298, 68430), (447, 45620), (596, 34215), (745, 27372), (894, 22810), (1490, 13686), (1788, 11405), (2235, 9124), (2281, 8940), (2980, 6843), (4470, 4562)]