18938360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{283}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 49075200

約数和(自身を除く): 30136840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 283, 478, 566, 956, 1132, 1195, 1415, 1673, 1912, 1981, 2264, 2390, 2830, 3346, 3962, 4780, 5660, 6692, 7924, 8365, 9560, 9905, 11320, 13384, 15848, 16730, 19810, 33460, 39620, 66920, 67637, 79240, 135274, 270548, 338185, 473459, 541096, 676370, 946918, 1352740, 1893836, 2367295, 2705480, 3787672, 4734590, 9469180, 18938360]

約数ペア:

[(1, 18938360), (2, 9469180), (4, 4734590), (5, 3787672), (7, 2705480), (8, 2367295), (10, 1893836), (14, 1352740), (20, 946918), (28, 676370), (35, 541096), (40, 473459), (56, 338185), (70, 270548), (140, 135274), (239, 79240), (280, 67637), (283, 66920), (478, 39620), (566, 33460), (956, 19810), (1132, 16730), (1195, 15848), (1415, 13384), (1673, 11320), (1912, 9905), (1981, 9560), (2264, 8365), (2390, 7924), (2830, 6692), (3346, 5660), (3962, 4780)]