21723615

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 39836160

約数和(自身を除く): 18112545

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 139, 151, 207, 345, 417, 453, 695, 755, 1035, 1251, 1359, 2085, 2265, 3197, 3473, 6255, 6795, 9591, 10419, 15985, 17365, 20989, 28773, 31257, 47955, 52095, 62967, 104945, 143865, 156285, 188901, 314835, 482747, 944505, 1448241, 2413735, 4344723, 7241205, 21723615]

約数ペア:

[(1, 21723615), (3, 7241205), (5, 4344723), (9, 2413735), (15, 1448241), (23, 944505), (45, 482747), (69, 314835), (115, 188901), (139, 156285), (151, 143865), (207, 104945), (345, 62967), (417, 52095), (453, 47955), (695, 31257), (755, 28773), (1035, 20989), (1251, 17365), (1359, 15985), (2085, 10419), (2265, 9591), (3197, 6795), (3473, 6255)]