18909180

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{97}}^1$

素因数の和:153

約数の個数: 144

約数和(自身を含む): 62727840

約数和(自身を除く): 43818660

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, 97, 108, 114, 135, 171, 180, 190, 194, 228, 270, 285, 291, 342, 361, 380, 388, 485, 513, 540, 570, 582, 684, 722, 855, 873, 970, 1026, 1083, 1140, 1164, 1444, 1455, 1710, 1746, 1805, 1843, 1940, 2052, 2166, 2565, 2619, 2910, 3249, 3420, 3492, 3610, 3686, 4332, 4365, 5130, 5238, 5415, 5529, 5820, 6498, 7220, 7372, 8730, 9215, 9747, 10260, 10476, 10830, 11058, 12996, 13095, 16245, 16587, 17460, 18430, 19494, 21660, 22116, 26190, 27645, 32490, 33174, 35017, 36860, 38988, 48735, 49761, 52380, 55290, 64980, 66348, 70034, 82935, 97470, 99522, 105051, 110580, 140068, 165870, 175085, 194940, 199044, 210102, 248805, 315153, 331740, 350170, 420204, 497610, 525255, 630306, 700340, 945459, 995220, 1050510, 1260612, 1575765, 1890918, 2101020, 3151530, 3781836, 4727295, 6303060, 9454590, 18909180]

約数ペア:

[(1, 18909180), (2, 9454590), (3, 6303060), (4, 4727295), (5, 3781836), (6, 3151530), (9, 2101020), (10, 1890918), (12, 1575765), (15, 1260612), (18, 1050510), (19, 995220), (20, 945459), (27, 700340), (30, 630306), (36, 525255), (38, 497610), (45, 420204), (54, 350170), (57, 331740), (60, 315153), (76, 248805), (90, 210102), (95, 199044), (97, 194940), (108, 175085), (114, 165870), (135, 140068), (171, 110580), (180, 105051), (190, 99522), (194, 97470), (228, 82935), (270, 70034), (285, 66348), (291, 64980), (342, 55290), (361, 52380), (380, 49761), (388, 48735), (485, 38988), (513, 36860), (540, 35017), (570, 33174), (582, 32490), (684, 27645), (722, 26190), (855, 22116), (873, 21660), (970, 19494), (1026, 18430), (1083, 17460), (1140, 16587), (1164, 16245), (1444, 13095), (1455, 12996), (1710, 11058), (1746, 10830), (1805, 10476), (1843, 10260), (1940, 9747), (2052, 9215), (2166, 8730), (2565, 7372), (2619, 7220), (2910, 6498), (3249, 5820), (3420, 5529), (3492, 5415), (3610, 5238), (3686, 5130), (4332, 4365)]