81679860

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{419}}^1$

素因数の和:475

約数の個数: 144

約数和(自身を含む): 268833600

約数和(自身を除く): 187153740

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, 361, 380, 419, 513, 540, 570, 684, 722, 838, 855, 1026, 1083, 1140, 1257, 1444, 1676, 1710, 1805, 2052, 2095, 2166, 2514, 2565, 3249, 3420, 3610, 3771, 4190, 4332, 5028, 5130, 5415, 6285, 6498, 7220, 7542, 7961, 8380, 9747, 10260, 10830, 11313, 12570, 12996, 15084, 15922, 16245, 18855, 19494, 21660, 22626, 23883, 25140, 31844, 32490, 37710, 38988, 39805, 45252, 47766, 48735, 56565, 64980, 71649, 75420, 79610, 95532, 97470, 113130, 119415, 143298, 151259, 159220, 194940, 214947, 226260, 238830, 286596, 302518, 358245, 429894, 453777, 477660, 605036, 716490, 756295, 859788, 907554, 1074735, 1361331, 1432980, 1512590, 1815108, 2149470, 2268885, 2722662, 3025180, 4083993, 4298940, 4537770, 5445324, 6806655, 8167986, 9075540, 13613310, 16335972, 20419965, 27226620, 40839930, 81679860]

約数ペア:

[(1, 81679860), (2, 40839930), (3, 27226620), (4, 20419965), (5, 16335972), (6, 13613310), (9, 9075540), (10, 8167986), (12, 6806655), (15, 5445324), (18, 4537770), (19, 4298940), (20, 4083993), (27, 3025180), (30, 2722662), (36, 2268885), (38, 2149470), (45, 1815108), (54, 1512590), (57, 1432980), (60, 1361331), (76, 1074735), (90, 907554), (95, 859788), (108, 756295), (114, 716490), (135, 605036), (171, 477660), (180, 453777), (190, 429894), (228, 358245), (270, 302518), (285, 286596), (342, 238830), (361, 226260), (380, 214947), (419, 194940), (513, 159220), (540, 151259), (570, 143298), (684, 119415), (722, 113130), (838, 97470), (855, 95532), (1026, 79610), (1083, 75420), (1140, 71649), (1257, 64980), (1444, 56565), (1676, 48735), (1710, 47766), (1805, 45252), (2052, 39805), (2095, 38988), (2166, 37710), (2514, 32490), (2565, 31844), (3249, 25140), (3420, 23883), (3610, 22626), (3771, 21660), (4190, 19494), (4332, 18855), (5028, 16245), (5130, 15922), (5415, 15084), (6285, 12996), (6498, 12570), (7220, 11313), (7542, 10830), (7961, 10260), (8380, 9747)]