221383040

素因数分解:

$2^7\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1231}}^1$

素因数の和:1531

約数の個数: 64

約数和(自身を含む): 531558720

約数和(自身を除く): 310175680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 281, 320, 562, 640, 1124, 1231, 1405, 2248, 2462, 2810, 4496, 4924, 5620, 6155, 8992, 9848, 11240, 12310, 17984, 19696, 22480, 24620, 35968, 39392, 44960, 49240, 78784, 89920, 98480, 157568, 179840, 196960, 345911, 393920, 691822, 787840, 1383644, 1729555, 2767288, 3459110, 5534576, 6918220, 11069152, 13836440, 22138304, 27672880, 44276608, 55345760, 110691520, 221383040]

約数ペア:

[(1, 221383040), (2, 110691520), (4, 55345760), (5, 44276608), (8, 27672880), (10, 22138304), (16, 13836440), (20, 11069152), (32, 6918220), (40, 5534576), (64, 3459110), (80, 2767288), (128, 1729555), (160, 1383644), (281, 787840), (320, 691822), (562, 393920), (640, 345911), (1124, 196960), (1231, 179840), (1405, 157568), (2248, 98480), (2462, 89920), (2810, 78784), (4496, 49240), (4924, 44960), (5620, 39392), (6155, 35968), (8992, 24620), (9848, 22480), (11240, 19696), (12310, 17984)]