81496520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 222566400

約数和(自身を除く): 141069880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 41, 56, 62, 70, 82, 124, 140, 155, 164, 205, 217, 229, 248, 280, 287, 310, 328, 410, 434, 458, 574, 620, 820, 868, 916, 1085, 1145, 1148, 1240, 1271, 1435, 1603, 1640, 1736, 1832, 2170, 2290, 2296, 2542, 2870, 3206, 4340, 4580, 5084, 5740, 6355, 6412, 7099, 8015, 8680, 8897, 9160, 9389, 10168, 11480, 12710, 12824, 14198, 16030, 17794, 18778, 25420, 28396, 32060, 35495, 35588, 37556, 44485, 46945, 49693, 50840, 56792, 64120, 65723, 70990, 71176, 75112, 88970, 93890, 99386, 131446, 141980, 177940, 187780, 198772, 248465, 262892, 283960, 291059, 328615, 355880, 375560, 397544, 496930, 525784, 582118, 657230, 993860, 1164236, 1314460, 1455295, 1987720, 2037413, 2328472, 2628920, 2910590, 4074826, 5821180, 8149652, 10187065, 11642360, 16299304, 20374130, 40748260, 81496520]

約数ペア:

[(1, 81496520), (2, 40748260), (4, 20374130), (5, 16299304), (7, 11642360), (8, 10187065), (10, 8149652), (14, 5821180), (20, 4074826), (28, 2910590), (31, 2628920), (35, 2328472), (40, 2037413), (41, 1987720), (56, 1455295), (62, 1314460), (70, 1164236), (82, 993860), (124, 657230), (140, 582118), (155, 525784), (164, 496930), (205, 397544), (217, 375560), (229, 355880), (248, 328615), (280, 291059), (287, 283960), (310, 262892), (328, 248465), (410, 198772), (434, 187780), (458, 177940), (574, 141980), (620, 131446), (820, 99386), (868, 93890), (916, 88970), (1085, 75112), (1145, 71176), (1148, 70990), (1240, 65723), (1271, 64120), (1435, 56792), (1603, 50840), (1640, 49693), (1736, 46945), (1832, 44485), (2170, 37556), (2290, 35588), (2296, 35495), (2542, 32060), (2870, 28396), (3206, 25420), (4340, 18778), (4580, 17794), (5084, 16030), (5740, 14198), (6355, 12824), (6412, 12710), (7099, 11480), (8015, 10168), (8680, 9389), (8897, 9160)]