21012365

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{6263}}^1$

素因数の和:6340

約数の個数: 16

約数和(自身を含む): 27962496

約数和(自身を除く): 6950131

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 6263, 31315, 68893, 344465, 382043, 1910215, 4202473, 21012365]

約数ペア:

[(1, 21012365), (5, 4202473), (11, 1910215), (55, 382043), (61, 344465), (305, 68893), (671, 31315), (3355, 6263)]