20445460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3947}}^1$

素因数の和:4000

約数の個数: 48

約数和(自身を含む): 50408064

約数和(自身を除く): 29962604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3947, 5180, 7894, 15788, 19735, 27629, 39470, 55258, 78940, 110516, 138145, 146039, 276290, 292078, 552580, 584156, 730195, 1022273, 1460390, 2044546, 2920780, 4089092, 5111365, 10222730, 20445460]

約数ペア:

[(1, 20445460), (2, 10222730), (4, 5111365), (5, 4089092), (7, 2920780), (10, 2044546), (14, 1460390), (20, 1022273), (28, 730195), (35, 584156), (37, 552580), (70, 292078), (74, 276290), (140, 146039), (148, 138145), (185, 110516), (259, 78940), (370, 55258), (518, 39470), (740, 27629), (1036, 19735), (1295, 15788), (2590, 7894), (3947, 5180)]