81913788

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{191}}^1$

素因数の和:253

約数の個数: 144

約数和(自身を含む): 245790720

約数和(自身を除く): 163876932

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 27, 33, 36, 38, 44, 54, 57, 66, 76, 99, 108, 114, 132, 171, 191, 198, 209, 228, 297, 342, 361, 382, 396, 418, 513, 573, 594, 627, 684, 722, 764, 836, 1026, 1083, 1146, 1188, 1254, 1444, 1719, 1881, 2052, 2101, 2166, 2292, 2508, 3249, 3438, 3629, 3762, 3971, 4202, 4332, 5157, 5643, 6303, 6498, 6876, 7258, 7524, 7942, 8404, 9747, 10314, 10887, 11286, 11913, 12606, 12996, 14516, 15884, 18909, 19494, 20628, 21774, 22572, 23826, 25212, 32661, 35739, 37818, 38988, 39919, 43548, 47652, 56727, 65322, 68951, 71478, 75636, 79838, 97983, 107217, 113454, 119757, 130644, 137902, 142956, 159676, 195966, 206853, 214434, 226908, 239514, 275804, 359271, 391932, 413706, 428868, 479028, 620559, 718542, 758461, 827412, 1077813, 1241118, 1437084, 1516922, 1861677, 2155626, 2275383, 2482236, 3033844, 3723354, 4311252, 4550766, 6826149, 7446708, 9101532, 13652298, 20478447, 27304596, 40956894, 81913788]

約数ペア:

[(1, 81913788), (2, 40956894), (3, 27304596), (4, 20478447), (6, 13652298), (9, 9101532), (11, 7446708), (12, 6826149), (18, 4550766), (19, 4311252), (22, 3723354), (27, 3033844), (33, 2482236), (36, 2275383), (38, 2155626), (44, 1861677), (54, 1516922), (57, 1437084), (66, 1241118), (76, 1077813), (99, 827412), (108, 758461), (114, 718542), (132, 620559), (171, 479028), (191, 428868), (198, 413706), (209, 391932), (228, 359271), (297, 275804), (342, 239514), (361, 226908), (382, 214434), (396, 206853), (418, 195966), (513, 159676), (573, 142956), (594, 137902), (627, 130644), (684, 119757), (722, 113454), (764, 107217), (836, 97983), (1026, 79838), (1083, 75636), (1146, 71478), (1188, 68951), (1254, 65322), (1444, 56727), (1719, 47652), (1881, 43548), (2052, 39919), (2101, 38988), (2166, 37818), (2292, 35739), (2508, 32661), (3249, 25212), (3438, 23826), (3629, 22572), (3762, 21774), (3971, 20628), (4202, 19494), (4332, 18909), (5157, 15884), (5643, 14516), (6303, 12996), (6498, 12606), (6876, 11913), (7258, 11286), (7524, 10887), (7942, 10314), (8404, 9747)]