18838980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:451

約数の個数: 120

約数和(自身を含む): 61288920

約数和(自身を除く): 42449940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 81, 87, 90, 108, 116, 135, 145, 162, 174, 180, 261, 270, 290, 324, 348, 401, 405, 435, 522, 540, 580, 783, 802, 810, 870, 1044, 1203, 1305, 1566, 1604, 1620, 1740, 2005, 2349, 2406, 2610, 3132, 3609, 3915, 4010, 4698, 4812, 5220, 6015, 7218, 7830, 8020, 9396, 10827, 11629, 11745, 12030, 14436, 15660, 18045, 21654, 23258, 23490, 24060, 32481, 34887, 36090, 43308, 46516, 46980, 54135, 58145, 64962, 69774, 72180, 104661, 108270, 116290, 129924, 139548, 162405, 174435, 209322, 216540, 232580, 313983, 324810, 348870, 418644, 523305, 627966, 649620, 697740, 941949, 1046610, 1255932, 1569915, 1883898, 2093220, 3139830, 3767796, 4709745, 6279660, 9419490, 18838980]

約数ペア:

[(1, 18838980), (2, 9419490), (3, 6279660), (4, 4709745), (5, 3767796), (6, 3139830), (9, 2093220), (10, 1883898), (12, 1569915), (15, 1255932), (18, 1046610), (20, 941949), (27, 697740), (29, 649620), (30, 627966), (36, 523305), (45, 418644), (54, 348870), (58, 324810), (60, 313983), (81, 232580), (87, 216540), (90, 209322), (108, 174435), (116, 162405), (135, 139548), (145, 129924), (162, 116290), (174, 108270), (180, 104661), (261, 72180), (270, 69774), (290, 64962), (324, 58145), (348, 54135), (401, 46980), (405, 46516), (435, 43308), (522, 36090), (540, 34887), (580, 32481), (783, 24060), (802, 23490), (810, 23258), (870, 21654), (1044, 18045), (1203, 15660), (1305, 14436), (1566, 12030), (1604, 11745), (1620, 11629), (1740, 10827), (2005, 9396), (2349, 8020), (2406, 7830), (2610, 7218), (3132, 6015), (3609, 5220), (3915, 4812), (4010, 4698)]