21990804479

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1\times {\mathrm{8101}}^1$

素因数の和:8415

約数の個数: 32

約数和(自身を含む): 26482262016

約数和(自身を除く): 4491457537

約数列:

[1, 7, 37, 47, 223, 259, 329, 1561, 1739, 8101, 8251, 10481, 12173, 56707, 57757, 73367, 299737, 380747, 387797, 1806523, 2098159, 2665229, 2714579, 12645661, 14087639, 66841351, 84906581, 98613473, 467889457, 594346067, 3141543497, 21990804479]

約数ペア:

[(1, 21990804479), (7, 3141543497), (37, 594346067), (47, 467889457), (223, 98613473), (259, 84906581), (329, 66841351), (1561, 14087639), (1739, 12645661), (8101, 2714579), (8251, 2665229), (10481, 2098159), (12173, 1806523), (56707, 387797), (57757, 380747), (73367, 299737)]