21137584

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{673}}^1$

素因数の和:845

約数の個数: 40

約数和(自身を含む): 44462432

約数和(自身を除く): 23324848

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 151, 208, 302, 604, 673, 1208, 1346, 1963, 2416, 2692, 3926, 5384, 7852, 8749, 10768, 15704, 17498, 31408, 34996, 69992, 101623, 139984, 203246, 406492, 812984, 1321099, 1625968, 2642198, 5284396, 10568792, 21137584]

約数ペア:

[(1, 21137584), (2, 10568792), (4, 5284396), (8, 2642198), (13, 1625968), (16, 1321099), (26, 812984), (52, 406492), (104, 203246), (151, 139984), (208, 101623), (302, 69992), (604, 34996), (673, 31408), (1208, 17498), (1346, 15704), (1963, 10768), (2416, 8749), (2692, 7852), (3926, 5384)]