17978090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3373}}^1$

素因数の和:3434

約数の個数: 32

約数和(自身を含む): 35710416

約数和(自身を除く): 17732326

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 3373, 5330, 6746, 16865, 33730, 43849, 87698, 138293, 219245, 276586, 438490, 691465, 1382930, 1797809, 3595618, 8989045, 17978090]

約数ペア:

[(1, 17978090), (2, 8989045), (5, 3595618), (10, 1797809), (13, 1382930), (26, 691465), (41, 438490), (65, 276586), (82, 219245), (130, 138293), (205, 87698), (410, 43849), (533, 33730), (1066, 16865), (2665, 6746), (3373, 5330)]