21295155505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1031}}^1\times {\mathrm{6761}}^1$

素因数の和:7857

約数の個数: 32

約数和(自身を含む): 28136844288

約数和(自身を除く): 6841688783

約数列:

[1, 5, 13, 47, 65, 235, 611, 1031, 3055, 5155, 6761, 13403, 33805, 48457, 67015, 87893, 242285, 317767, 439465, 629941, 1588835, 3149705, 4130971, 6970591, 20654855, 34852955, 90617683, 327617777, 453088415, 1638088885, 4259031101, 21295155505]

約数ペア:

[(1, 21295155505), (5, 4259031101), (13, 1638088885), (47, 453088415), (65, 327617777), (235, 90617683), (611, 34852955), (1031, 20654855), (3055, 6970591), (5155, 4130971), (6761, 3149705), (13403, 1588835), (33805, 629941), (48457, 439465), (67015, 317767), (87893, 242285)]