81580380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194239}}^1$

素因数の和:194258

約数の個数: 48

約数和(自身を含む): 261058560

約数和(自身を除く): 179478180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194239, 388478, 582717, 776956, 971195, 1165434, 1359673, 1942390, 2330868, 2719346, 2913585, 3884780, 4079019, 5438692, 5827170, 6798365, 8158038, 11654340, 13596730, 16316076, 20395095, 27193460, 40790190, 81580380]

約数ペア:

[(1, 81580380), (2, 40790190), (3, 27193460), (4, 20395095), (5, 16316076), (6, 13596730), (7, 11654340), (10, 8158038), (12, 6798365), (14, 5827170), (15, 5438692), (20, 4079019), (21, 3884780), (28, 2913585), (30, 2719346), (35, 2330868), (42, 1942390), (60, 1359673), (70, 1165434), (84, 971195), (105, 776956), (140, 582717), (210, 388478), (420, 194239)]