20018126

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:240

約数の個数: 32

約数和(自身を含む): 32378880

約数和(自身を除く): 12360754

約数列:

[1, 2, 31, 61, 62, 67, 79, 122, 134, 158, 1891, 2077, 2449, 3782, 4087, 4154, 4819, 4898, 5293, 8174, 9638, 10586, 126697, 149389, 164083, 253394, 298778, 322873, 328166, 645746, 10009063, 20018126]

約数ペア:

[(1, 20018126), (2, 10009063), (31, 645746), (61, 328166), (62, 322873), (67, 298778), (79, 253394), (122, 164083), (134, 149389), (158, 126697), (1891, 10586), (2077, 9638), (2449, 8174), (3782, 5293), (4087, 4898), (4154, 4819)]