81382440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{167}}^1$

素因数の和:343

約数の個数: 128

約数和(自身を含む): 255467520

約数和(自身を除く): 174085080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 131, 155, 167, 186, 248, 262, 310, 334, 372, 393, 465, 501, 524, 620, 655, 668, 744, 786, 835, 930, 1002, 1048, 1240, 1310, 1336, 1572, 1670, 1860, 1965, 2004, 2505, 2620, 3144, 3340, 3720, 3930, 4008, 4061, 5010, 5177, 5240, 6680, 7860, 8122, 10020, 10354, 12183, 15531, 15720, 16244, 20040, 20305, 20708, 21877, 24366, 25885, 31062, 32488, 40610, 41416, 43754, 48732, 51770, 60915, 62124, 65631, 77655, 81220, 87508, 97464, 103540, 109385, 121830, 124248, 131262, 155310, 162440, 175016, 207080, 218770, 243660, 262524, 310620, 328155, 437540, 487320, 525048, 621240, 656310, 678187, 875080, 1312620, 1356374, 2034561, 2625240, 2712748, 3390935, 4069122, 5425496, 6781870, 8138244, 10172805, 13563740, 16276488, 20345610, 27127480, 40691220, 81382440]

約数ペア:

[(1, 81382440), (2, 40691220), (3, 27127480), (4, 20345610), (5, 16276488), (6, 13563740), (8, 10172805), (10, 8138244), (12, 6781870), (15, 5425496), (20, 4069122), (24, 3390935), (30, 2712748), (31, 2625240), (40, 2034561), (60, 1356374), (62, 1312620), (93, 875080), (120, 678187), (124, 656310), (131, 621240), (155, 525048), (167, 487320), (186, 437540), (248, 328155), (262, 310620), (310, 262524), (334, 243660), (372, 218770), (393, 207080), (465, 175016), (501, 162440), (524, 155310), (620, 131262), (655, 124248), (668, 121830), (744, 109385), (786, 103540), (835, 97464), (930, 87508), (1002, 81220), (1048, 77655), (1240, 65631), (1310, 62124), (1336, 60915), (1572, 51770), (1670, 48732), (1860, 43754), (1965, 41416), (2004, 40610), (2505, 32488), (2620, 31062), (3144, 25885), (3340, 24366), (3720, 21877), (3930, 20708), (4008, 20305), (4061, 20040), (5010, 16244), (5177, 15720), (5240, 15531), (6680, 12183), (7860, 10354), (8122, 10020)]