21885892

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 23353148

約数列:

[1, 2, 4, 7, 14, 28, 71, 101, 109, 142, 202, 218, 284, 404, 436, 497, 707, 763, 994, 1414, 1526, 1988, 2828, 3052, 7171, 7739, 11009, 14342, 15478, 22018, 28684, 30956, 44036, 50197, 54173, 77063, 100394, 108346, 154126, 200788, 216692, 308252, 781639, 1563278, 3126556, 5471473, 10942946, 21885892]

約数ペア:

[(1, 21885892), (2, 10942946), (4, 5471473), (7, 3126556), (14, 1563278), (28, 781639), (71, 308252), (101, 216692), (109, 200788), (142, 154126), (202, 108346), (218, 100394), (284, 77063), (404, 54173), (436, 50197), (497, 44036), (707, 30956), (763, 28684), (994, 22018), (1414, 15478), (1526, 14342), (1988, 11009), (2828, 7739), (3052, 7171)]