20388305

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 29548800

約数和(自身を除く): 9160495

約数列:

[1, 5, 7, 29, 35, 53, 145, 203, 265, 371, 379, 1015, 1537, 1855, 1895, 2653, 7685, 10759, 10991, 13265, 20087, 53795, 54955, 76937, 100435, 140609, 384685, 582523, 703045, 2912615, 4077661, 20388305]

約数ペア:

[(1, 20388305), (5, 4077661), (7, 2912615), (29, 703045), (35, 582523), (53, 384685), (145, 140609), (203, 100435), (265, 76937), (371, 54955), (379, 53795), (1015, 20087), (1537, 13265), (1855, 10991), (1895, 10759), (2653, 7685)]