81809820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1259}}^1$

素因数の和:1312

約数の個数: 108

約数和(自身を含む): 262112760

約数和(自身を除く): 180302940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 361, 380, 570, 684, 722, 855, 1083, 1140, 1259, 1444, 1710, 1805, 2166, 2518, 3249, 3420, 3610, 3777, 4332, 5036, 5415, 6295, 6498, 7220, 7554, 10830, 11331, 12590, 12996, 15108, 16245, 18885, 21660, 22662, 23921, 25180, 32490, 37770, 45324, 47842, 56655, 64980, 71763, 75540, 95684, 113310, 119605, 143526, 215289, 226620, 239210, 287052, 358815, 430578, 454499, 478420, 717630, 861156, 908998, 1076445, 1363497, 1435260, 1817996, 2152890, 2272495, 2726994, 4090491, 4305780, 4544990, 5453988, 6817485, 8180982, 9089980, 13634970, 16361964, 20452455, 27269940, 40904910, 81809820]

約数ペア:

[(1, 81809820), (2, 40904910), (3, 27269940), (4, 20452455), (5, 16361964), (6, 13634970), (9, 9089980), (10, 8180982), (12, 6817485), (15, 5453988), (18, 4544990), (19, 4305780), (20, 4090491), (30, 2726994), (36, 2272495), (38, 2152890), (45, 1817996), (57, 1435260), (60, 1363497), (76, 1076445), (90, 908998), (95, 861156), (114, 717630), (171, 478420), (180, 454499), (190, 430578), (228, 358815), (285, 287052), (342, 239210), (361, 226620), (380, 215289), (570, 143526), (684, 119605), (722, 113310), (855, 95684), (1083, 75540), (1140, 71763), (1259, 64980), (1444, 56655), (1710, 47842), (1805, 45324), (2166, 37770), (2518, 32490), (3249, 25180), (3420, 23921), (3610, 22662), (3777, 21660), (4332, 18885), (5036, 16245), (5415, 15108), (6295, 12996), (6498, 12590), (7220, 11331), (7554, 10830)]