556400020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 1306368000

約数和(自身を除く): 749967980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 179, 199, 220, 284, 355, 358, 398, 710, 716, 781, 796, 895, 995, 1420, 1562, 1790, 1969, 1990, 2189, 3124, 3580, 3905, 3938, 3980, 4378, 7810, 7876, 8756, 9845, 10945, 12709, 14129, 15620, 19690, 21890, 25418, 28258, 35621, 39380, 43780, 50836, 56516, 63545, 70645, 71242, 127090, 139799, 141290, 142484, 155419, 178105, 254180, 279598, 282580, 310838, 356210, 391831, 559196, 621676, 698995, 712420, 777095, 783662, 1397990, 1554190, 1567324, 1959155, 2529091, 2795980, 3108380, 3918310, 5058182, 7836620, 10116364, 12645455, 25290910, 27820001, 50581820, 55640002, 111280004, 139100005, 278200010, 556400020]

約数ペア:

[(1, 556400020), (2, 278200010), (4, 139100005), (5, 111280004), (10, 55640002), (11, 50581820), (20, 27820001), (22, 25290910), (44, 12645455), (55, 10116364), (71, 7836620), (110, 5058182), (142, 3918310), (179, 3108380), (199, 2795980), (220, 2529091), (284, 1959155), (355, 1567324), (358, 1554190), (398, 1397990), (710, 783662), (716, 777095), (781, 712420), (796, 698995), (895, 621676), (995, 559196), (1420, 391831), (1562, 356210), (1790, 310838), (1969, 282580), (1990, 279598), (2189, 254180), (3124, 178105), (3580, 155419), (3905, 142484), (3938, 141290), (3980, 139799), (4378, 127090), (7810, 71242), (7876, 70645), (8756, 63545), (9845, 56516), (10945, 50836), (12709, 43780), (14129, 39380), (15620, 35621), (19690, 28258), (21890, 25418)]