20817540

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2029}}^1$

素因数の和:2066

約数の個数: 96

約数和(自身を含む): 68208000

約数和(自身を除く): 47390460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 108, 114, 135, 171, 180, 190, 228, 270, 285, 342, 380, 513, 540, 570, 684, 855, 1026, 1140, 1710, 2029, 2052, 2565, 3420, 4058, 5130, 6087, 8116, 10145, 10260, 12174, 18261, 20290, 24348, 30435, 36522, 38551, 40580, 54783, 60870, 73044, 77102, 91305, 109566, 115653, 121740, 154204, 182610, 192755, 219132, 231306, 273915, 346959, 365220, 385510, 462612, 547830, 578265, 693918, 771020, 1040877, 1095660, 1156530, 1387836, 1734795, 2081754, 2313060, 3469590, 4163508, 5204385, 6939180, 10408770, 20817540]

約数ペア:

[(1, 20817540), (2, 10408770), (3, 6939180), (4, 5204385), (5, 4163508), (6, 3469590), (9, 2313060), (10, 2081754), (12, 1734795), (15, 1387836), (18, 1156530), (19, 1095660), (20, 1040877), (27, 771020), (30, 693918), (36, 578265), (38, 547830), (45, 462612), (54, 385510), (57, 365220), (60, 346959), (76, 273915), (90, 231306), (95, 219132), (108, 192755), (114, 182610), (135, 154204), (171, 121740), (180, 115653), (190, 109566), (228, 91305), (270, 77102), (285, 73044), (342, 60870), (380, 54783), (513, 40580), (540, 38551), (570, 36522), (684, 30435), (855, 24348), (1026, 20290), (1140, 18261), (1710, 12174), (2029, 10260), (2052, 10145), (2565, 8116), (3420, 6087), (4058, 5130)]