21156618

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2557}}^1$

素因数の和:2766

約数の個数: 32

約数和(自身を含む): 48622464

約数和(自身を除く): 27465846

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 197, 394, 591, 1182, 1379, 2557, 2758, 4137, 5114, 7671, 8274, 15342, 17899, 35798, 53697, 107394, 503729, 1007458, 1511187, 3022374, 3526103, 7052206, 10578309, 21156618]

約数ペア:

[(1, 21156618), (2, 10578309), (3, 7052206), (6, 3526103), (7, 3022374), (14, 1511187), (21, 1007458), (42, 503729), (197, 107394), (394, 53697), (591, 35798), (1182, 17899), (1379, 15342), (2557, 8274), (2758, 7671), (4137, 5114)]