81857720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{593}}^1$

素因数の和:657

約数の個数: 128

約数和(自身を含む): 230947200

約数和(自身を除く): 149089480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 29, 34, 35, 40, 56, 58, 68, 70, 85, 116, 119, 136, 140, 145, 170, 203, 232, 238, 280, 290, 340, 406, 476, 493, 580, 593, 595, 680, 812, 952, 986, 1015, 1160, 1186, 1190, 1624, 1972, 2030, 2372, 2380, 2465, 2965, 3451, 3944, 4060, 4151, 4744, 4760, 4930, 5930, 6902, 8120, 8302, 9860, 10081, 11860, 13804, 16604, 17197, 17255, 19720, 20162, 20755, 23720, 27608, 33208, 34394, 34510, 40324, 41510, 50405, 68788, 69020, 70567, 80648, 83020, 85985, 100810, 120379, 137576, 138040, 141134, 166040, 171970, 201620, 240758, 282268, 292349, 343940, 352835, 403240, 481516, 564536, 584698, 601895, 687880, 705670, 963032, 1169396, 1203790, 1411340, 1461745, 2046443, 2338792, 2407580, 2822680, 2923490, 4092886, 4815160, 5846980, 8185772, 10232215, 11693960, 16371544, 20464430, 40928860, 81857720]

約数ペア:

[(1, 81857720), (2, 40928860), (4, 20464430), (5, 16371544), (7, 11693960), (8, 10232215), (10, 8185772), (14, 5846980), (17, 4815160), (20, 4092886), (28, 2923490), (29, 2822680), (34, 2407580), (35, 2338792), (40, 2046443), (56, 1461745), (58, 1411340), (68, 1203790), (70, 1169396), (85, 963032), (116, 705670), (119, 687880), (136, 601895), (140, 584698), (145, 564536), (170, 481516), (203, 403240), (232, 352835), (238, 343940), (280, 292349), (290, 282268), (340, 240758), (406, 201620), (476, 171970), (493, 166040), (580, 141134), (593, 138040), (595, 137576), (680, 120379), (812, 100810), (952, 85985), (986, 83020), (1015, 80648), (1160, 70567), (1186, 69020), (1190, 68788), (1624, 50405), (1972, 41510), (2030, 40324), (2372, 34510), (2380, 34394), (2465, 33208), (2965, 27608), (3451, 23720), (3944, 20755), (4060, 20162), (4151, 19720), (4744, 17255), (4760, 17197), (4930, 16604), (5930, 13804), (6902, 11860), (8120, 10081), (8302, 9860)]