25335640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 63141120

約数和(自身を除く): 37805480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 811, 1420, 1562, 1622, 2840, 3124, 3244, 3905, 4055, 6248, 6488, 7810, 8110, 8921, 15620, 16220, 17842, 31240, 32440, 35684, 44605, 57581, 71368, 89210, 115162, 178420, 230324, 287905, 356840, 460648, 575810, 633391, 1151620, 1266782, 2303240, 2533564, 3166955, 5067128, 6333910, 12667820, 25335640]

約数ペア:

[(1, 25335640), (2, 12667820), (4, 6333910), (5, 5067128), (8, 3166955), (10, 2533564), (11, 2303240), (20, 1266782), (22, 1151620), (40, 633391), (44, 575810), (55, 460648), (71, 356840), (88, 287905), (110, 230324), (142, 178420), (220, 115162), (284, 89210), (355, 71368), (440, 57581), (568, 44605), (710, 35684), (781, 32440), (811, 31240), (1420, 17842), (1562, 16220), (1622, 15620), (2840, 8921), (3124, 8110), (3244, 7810), (3905, 6488), (4055, 6248)]