20918716

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{569}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 45581760

約数和(自身を除く): 24663044

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 101, 182, 202, 364, 404, 569, 707, 1138, 1313, 1414, 2276, 2626, 2828, 3983, 5252, 7397, 7966, 9191, 14794, 15932, 18382, 29588, 36764, 51779, 57469, 103558, 114938, 207116, 229876, 402283, 747097, 804566, 1494194, 1609132, 2988388, 5229679, 10459358, 20918716]

約数ペア:

[(1, 20918716), (2, 10459358), (4, 5229679), (7, 2988388), (13, 1609132), (14, 1494194), (26, 804566), (28, 747097), (52, 402283), (91, 229876), (101, 207116), (182, 114938), (202, 103558), (364, 57469), (404, 51779), (569, 36764), (707, 29588), (1138, 18382), (1313, 15932), (1414, 14794), (2276, 9191), (2626, 7966), (2828, 7397), (3983, 5252)]