21731950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:757

約数の個数: 48

約数和(自身を含む): 44019504

約数和(自身を除く): 22287554

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 170, 185, 370, 425, 629, 691, 850, 925, 1258, 1382, 1850, 3145, 3455, 6290, 6910, 11747, 15725, 17275, 23494, 25567, 31450, 34550, 51134, 58735, 117470, 127835, 255670, 293675, 434639, 587350, 639175, 869278, 1278350, 2173195, 4346390, 10865975, 21731950]

約数ペア:

[(1, 21731950), (2, 10865975), (5, 4346390), (10, 2173195), (17, 1278350), (25, 869278), (34, 639175), (37, 587350), (50, 434639), (74, 293675), (85, 255670), (170, 127835), (185, 117470), (370, 58735), (425, 51134), (629, 34550), (691, 31450), (850, 25567), (925, 23494), (1258, 17275), (1382, 15725), (1850, 11747), (3145, 6910), (3455, 6290)]