18788790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 28489290

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 89, 93, 155, 178, 186, 227, 267, 310, 445, 454, 465, 534, 681, 890, 930, 1135, 1335, 1362, 2270, 2670, 2759, 3405, 5518, 6810, 7037, 8277, 13795, 14074, 16554, 20203, 21111, 27590, 35185, 40406, 41385, 42222, 60609, 70370, 82770, 101015, 105555, 121218, 202030, 211110, 303045, 606090, 626293, 1252586, 1878879, 3131465, 3757758, 6262930, 9394395, 18788790]

約数ペア:

[(1, 18788790), (2, 9394395), (3, 6262930), (5, 3757758), (6, 3131465), (10, 1878879), (15, 1252586), (30, 626293), (31, 606090), (62, 303045), (89, 211110), (93, 202030), (155, 121218), (178, 105555), (186, 101015), (227, 82770), (267, 70370), (310, 60609), (445, 42222), (454, 41385), (465, 40406), (534, 35185), (681, 27590), (890, 21111), (930, 20203), (1135, 16554), (1335, 14074), (1362, 13795), (2270, 8277), (2670, 7037), (2759, 6810), (3405, 5518)]