20201207984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{14669}}^1$

素因数の和:14838

約数の個数: 80

約数和(自身を含む): 42631958880

約数和(自身を除く): 22430750896

約数列:

[1, 2, 4, 8, 16, 17, 34, 61, 68, 83, 122, 136, 166, 244, 272, 332, 488, 664, 976, 1037, 1328, 1411, 2074, 2822, 4148, 5063, 5644, 8296, 10126, 11288, 14669, 16592, 20252, 22576, 29338, 40504, 58676, 81008, 86071, 117352, 172142, 234704, 249373, 344284, 498746, 688568, 894809, 997492, 1217527, 1377136, 1789618, 1994984, 2435054, 3579236, 3989968, 4870108, 7158472, 9740216, 14316944, 15211753, 19480432, 20697959, 30423506, 41395918, 60847012, 74269147, 82791836, 121694024, 148538294, 165583672, 243388048, 297076588, 331167344, 594153176, 1188306352, 1262575499, 2525150998, 5050301996, 10100603992, 20201207984]

約数ペア:

[(1, 20201207984), (2, 10100603992), (4, 5050301996), (8, 2525150998), (16, 1262575499), (17, 1188306352), (34, 594153176), (61, 331167344), (68, 297076588), (83, 243388048), (122, 165583672), (136, 148538294), (166, 121694024), (244, 82791836), (272, 74269147), (332, 60847012), (488, 41395918), (664, 30423506), (976, 20697959), (1037, 19480432), (1328, 15211753), (1411, 14316944), (2074, 9740216), (2822, 7158472), (4148, 4870108), (5063, 3989968), (5644, 3579236), (8296, 2435054), (10126, 1994984), (11288, 1789618), (14669, 1377136), (16592, 1217527), (20252, 997492), (22576, 894809), (29338, 688568), (40504, 498746), (58676, 344284), (81008, 249373), (86071, 234704), (117352, 172142)]