20178985465

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{264071}}^1$

素因数の和:264153

約数の個数: 32

約数和(自身を含む): 27378984960

約数和(自身を除く): 7199999495

約数列:

[1, 5, 17, 29, 31, 85, 145, 155, 493, 527, 899, 2465, 2635, 4495, 15283, 76415, 264071, 1320355, 4489207, 7658059, 8186201, 22446035, 38290295, 40931005, 130187003, 139165417, 237399829, 650935015, 695827085, 1186999145, 4035797093, 20178985465]

約数ペア:

[(1, 20178985465), (5, 4035797093), (17, 1186999145), (29, 695827085), (31, 650935015), (85, 237399829), (145, 139165417), (155, 130187003), (493, 40931005), (527, 38290295), (899, 22446035), (2465, 8186201), (2635, 7658059), (4495, 4489207), (15283, 1320355), (76415, 264071)]