21451300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{569}}^1$

素因数の和:625

約数の個数: 72

約数和(自身を含む): 51949800

約数和(自身を除く): 30498500

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 29, 50, 52, 58, 65, 100, 116, 130, 145, 260, 290, 325, 377, 569, 580, 650, 725, 754, 1138, 1300, 1450, 1508, 1885, 2276, 2845, 2900, 3770, 5690, 7397, 7540, 9425, 11380, 14225, 14794, 16501, 18850, 28450, 29588, 33002, 36985, 37700, 56900, 66004, 73970, 82505, 147940, 165010, 184925, 214513, 330020, 369850, 412525, 429026, 739700, 825050, 858052, 1072565, 1650100, 2145130, 4290260, 5362825, 10725650, 21451300]

約数ペア:

[(1, 21451300), (2, 10725650), (4, 5362825), (5, 4290260), (10, 2145130), (13, 1650100), (20, 1072565), (25, 858052), (26, 825050), (29, 739700), (50, 429026), (52, 412525), (58, 369850), (65, 330020), (100, 214513), (116, 184925), (130, 165010), (145, 147940), (260, 82505), (290, 73970), (325, 66004), (377, 56900), (569, 37700), (580, 36985), (650, 33002), (725, 29588), (754, 28450), (1138, 18850), (1300, 16501), (1450, 14794), (1508, 14225), (1885, 11380), (2276, 9425), (2845, 7540), (2900, 7397), (3770, 5690)]