19577540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 24621244

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 811, 1207, 1420, 1622, 2414, 3244, 4055, 4828, 6035, 8110, 12070, 13787, 16220, 24140, 27574, 55148, 57581, 68935, 115162, 137870, 230324, 275740, 287905, 575810, 978877, 1151620, 1957754, 3915508, 4894385, 9788770, 19577540]

約数ペア:

[(1, 19577540), (2, 9788770), (4, 4894385), (5, 3915508), (10, 1957754), (17, 1151620), (20, 978877), (34, 575810), (68, 287905), (71, 275740), (85, 230324), (142, 137870), (170, 115162), (284, 68935), (340, 57581), (355, 55148), (710, 27574), (811, 24140), (1207, 16220), (1420, 13787), (1622, 12070), (2414, 8110), (3244, 6035), (4055, 4828)]