21975480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61043}}^1$

素因数の和:61060

約数の個数: 48

約数和(自身を含む): 71421480

約数和(自身を除く): 49446000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 61043, 122086, 183129, 244172, 305215, 366258, 488344, 549387, 610430, 732516, 915645, 1098774, 1220860, 1465032, 1831290, 2197548, 2441720, 2746935, 3662580, 4395096, 5493870, 7325160, 10987740, 21975480]

約数ペア:

[(1, 21975480), (2, 10987740), (3, 7325160), (4, 5493870), (5, 4395096), (6, 3662580), (8, 2746935), (9, 2441720), (10, 2197548), (12, 1831290), (15, 1465032), (18, 1220860), (20, 1098774), (24, 915645), (30, 732516), (36, 610430), (40, 549387), (45, 488344), (60, 366258), (72, 305215), (90, 244172), (120, 183129), (180, 122086), (360, 61043)]