201991400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{77689}}^1$

素因数の和:77718

約数の個数: 48

約数和(自身を含む): 505761900

約数和(自身を除く): 303770500

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 77689, 155378, 310756, 388445, 621512, 776890, 1009957, 1553780, 1942225, 2019914, 3107560, 3884450, 4039828, 5049785, 7768900, 8079656, 10099570, 15537800, 20199140, 25248925, 40398280, 50497850, 100995700, 201991400]

約数ペア:

[(1, 201991400), (2, 100995700), (4, 50497850), (5, 40398280), (8, 25248925), (10, 20199140), (13, 15537800), (20, 10099570), (25, 8079656), (26, 7768900), (40, 5049785), (50, 4039828), (52, 3884450), (65, 3107560), (100, 2019914), (104, 1942225), (130, 1553780), (200, 1009957), (260, 776890), (325, 621512), (520, 388445), (650, 310756), (1300, 155378), (2600, 77689)]