81464480

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:322

約数の個数: 96

約数和(自身を含む): 202260240

約数和(自身を除く): 120795760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 97, 116, 145, 160, 181, 194, 232, 290, 362, 388, 464, 485, 580, 724, 776, 905, 928, 970, 1160, 1448, 1552, 1810, 1940, 2320, 2813, 2896, 3104, 3620, 3880, 4640, 5249, 5626, 5792, 7240, 7760, 10498, 11252, 14065, 14480, 15520, 17557, 20996, 22504, 26245, 28130, 28960, 35114, 41992, 45008, 52490, 56260, 70228, 83984, 87785, 90016, 104980, 112520, 140456, 167968, 175570, 209960, 225040, 280912, 351140, 419920, 450080, 509153, 561824, 702280, 839840, 1018306, 1404560, 2036612, 2545765, 2809120, 4073224, 5091530, 8146448, 10183060, 16292896, 20366120, 40732240, 81464480]

約数ペア:

[(1, 81464480), (2, 40732240), (4, 20366120), (5, 16292896), (8, 10183060), (10, 8146448), (16, 5091530), (20, 4073224), (29, 2809120), (32, 2545765), (40, 2036612), (58, 1404560), (80, 1018306), (97, 839840), (116, 702280), (145, 561824), (160, 509153), (181, 450080), (194, 419920), (232, 351140), (290, 280912), (362, 225040), (388, 209960), (464, 175570), (485, 167968), (580, 140456), (724, 112520), (776, 104980), (905, 90016), (928, 87785), (970, 83984), (1160, 70228), (1448, 56260), (1552, 52490), (1810, 45008), (1940, 41992), (2320, 35114), (2813, 28960), (2896, 28130), (3104, 26245), (3620, 22504), (3880, 20996), (4640, 17557), (5249, 15520), (5626, 14480), (5792, 14065), (7240, 11252), (7760, 10498)]