81821740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:168

約数の個数: 192

約数和(自身を含む): 237984768

約数和(自身を除く): 156163028

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 61, 65, 67, 70, 77, 91, 110, 122, 130, 134, 140, 143, 154, 182, 220, 244, 260, 268, 286, 305, 308, 335, 364, 385, 427, 455, 469, 572, 610, 670, 671, 715, 737, 770, 793, 854, 871, 910, 938, 1001, 1220, 1340, 1342, 1430, 1474, 1540, 1586, 1708, 1742, 1820, 1876, 2002, 2135, 2345, 2684, 2860, 2948, 3172, 3355, 3484, 3685, 3965, 4004, 4087, 4270, 4355, 4690, 4697, 5005, 5159, 5551, 6097, 6710, 7370, 7930, 8174, 8540, 8710, 8723, 9380, 9394, 9581, 10010, 10318, 11102, 12194, 13420, 14740, 15860, 16348, 17420, 17446, 18788, 19162, 20020, 20435, 20636, 22204, 23485, 24388, 25795, 27755, 28609, 30485, 34892, 38324, 40870, 43615, 44957, 46970, 47905, 51590, 53131, 55510, 57218, 60970, 61061, 67067, 81740, 87230, 89914, 93940, 95810, 103180, 106262, 111020, 114436, 121940, 122122, 134134, 143045, 174460, 179828, 191620, 212524, 224785, 244244, 265655, 268268, 286090, 305305, 314699, 335335, 371917, 449570, 531310, 572180, 584441, 610610, 629398, 670670, 743834, 899140, 1062620, 1168882, 1221220, 1258796, 1341340, 1487668, 1573495, 1859585, 2337764, 2922205, 3146990, 3719170, 4091087, 5844410, 6293980, 7438340, 8182174, 11688820, 16364348, 20455435, 40910870, 81821740]

約数ペア:

[(1, 81821740), (2, 40910870), (4, 20455435), (5, 16364348), (7, 11688820), (10, 8182174), (11, 7438340), (13, 6293980), (14, 5844410), (20, 4091087), (22, 3719170), (26, 3146990), (28, 2922205), (35, 2337764), (44, 1859585), (52, 1573495), (55, 1487668), (61, 1341340), (65, 1258796), (67, 1221220), (70, 1168882), (77, 1062620), (91, 899140), (110, 743834), (122, 670670), (130, 629398), (134, 610610), (140, 584441), (143, 572180), (154, 531310), (182, 449570), (220, 371917), (244, 335335), (260, 314699), (268, 305305), (286, 286090), (305, 268268), (308, 265655), (335, 244244), (364, 224785), (385, 212524), (427, 191620), (455, 179828), (469, 174460), (572, 143045), (610, 134134), (670, 122122), (671, 121940), (715, 114436), (737, 111020), (770, 106262), (793, 103180), (854, 95810), (871, 93940), (910, 89914), (938, 87230), (1001, 81740), (1220, 67067), (1340, 61061), (1342, 60970), (1430, 57218), (1474, 55510), (1540, 53131), (1586, 51590), (1708, 47905), (1742, 46970), (1820, 44957), (1876, 43615), (2002, 40870), (2135, 38324), (2345, 34892), (2684, 30485), (2860, 28609), (2948, 27755), (3172, 25795), (3355, 24388), (3484, 23485), (3685, 22204), (3965, 20636), (4004, 20435), (4087, 20020), (4270, 19162), (4355, 18788), (4690, 17446), (4697, 17420), (5005, 16348), (5159, 15860), (5551, 14740), (6097, 13420), (6710, 12194), (7370, 11102), (7930, 10318), (8174, 10010), (8540, 9581), (8710, 9394), (8723, 9380)]