21110505

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1483}}^1$

素因数の和:1577

約数の個数: 32

約数和(自身を含む): 36898176

約数和(自身を除く): 15787671

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 195, 219, 365, 949, 1095, 1483, 2847, 4449, 4745, 7415, 14235, 19279, 22245, 57837, 96395, 108259, 289185, 324777, 541295, 1407367, 1623885, 4222101, 7036835, 21110505]

約数ペア:

[(1, 21110505), (3, 7036835), (5, 4222101), (13, 1623885), (15, 1407367), (39, 541295), (65, 324777), (73, 289185), (195, 108259), (219, 96395), (365, 57837), (949, 22245), (1095, 19279), (1483, 14235), (2847, 7415), (4449, 4745)]