18715860

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{3851}}^1$

素因数の和:3875

約数の個数: 72

約数和(自身を含む): 58889376

約数和(自身を除く): 40173516

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 3851, 4860, 7702, 11553, 15404, 19255, 23106, 34659, 38510, 46212, 57765, 69318, 77020, 103977, 115530, 138636, 173295, 207954, 231060, 311931, 346590, 415908, 519885, 623862, 693180, 935793, 1039770, 1247724, 1559655, 1871586, 2079540, 3119310, 3743172, 4678965, 6238620, 9357930, 18715860]

約数ペア:

[(1, 18715860), (2, 9357930), (3, 6238620), (4, 4678965), (5, 3743172), (6, 3119310), (9, 2079540), (10, 1871586), (12, 1559655), (15, 1247724), (18, 1039770), (20, 935793), (27, 693180), (30, 623862), (36, 519885), (45, 415908), (54, 346590), (60, 311931), (81, 231060), (90, 207954), (108, 173295), (135, 138636), (162, 115530), (180, 103977), (243, 77020), (270, 69318), (324, 57765), (405, 46212), (486, 38510), (540, 34659), (810, 23106), (972, 19255), (1215, 15404), (1620, 11553), (2430, 7702), (3851, 4860)]