81748277.000000000

素因数分解:

$2^1\times 3^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{2113}}^1$

素因数の和:2168

約数の個数: 120

約数和(自身を含む): 761242944

約数和(自身を除く): 495955794

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 31, 45, 50, 54, 62, 75, 81, 90, 93, 135, 150, 155, 162, 186, 225, 270, 279, 310, 405, 450, 465, 558, 675, 775, 810, 837, 930, 1350, 1395, 1550, 1674, 2025, 2113, 2325, 2511, 2790, 4050, 4185, 4226, 4650, 5022, 6339, 6975, 8370, 10565, 12555, 12678, 13950, 19017, 20925, 21130, 25110, 31695, 38034, 41850, 52825, 57051, 62775, 63390, 65503, 95085, 105650, 114102, 125550, 131006, 158475, 171153, 190170, 196509, 285255, 316950, 327515, 342306, 393018, 475425, 570510, 589527, 655030, 855765, 950850, 982545, 1179054, 1426275, 1637575, 1711530, 1768581, 1965090, 2852550, 2947635, 3275150, 3537162, 4278825, 4912725, 5305743, 5895270, 8557650, 8842905, 9825450, 10611486, 14738175, 17685810, 26528715, 29476350, 44214525, 53057430, 88429050, 132643575, 265287150]

約数ペア:

[(1, 265287150), (2, 132643575), (3, 88429050), (5, 53057430), (6, 44214525), (9, 29476350), (10, 26528715), (15, 17685810), (18, 14738175), (25, 10611486), (27, 9825450), (30, 8842905), (31, 8557650), (45, 5895270), (50, 5305743), (54, 4912725), (62, 4278825), (75, 3537162), (81, 3275150), (90, 2947635), (93, 2852550), (135, 1965090), (150, 1768581), (155, 1711530), (162, 1637575), (186, 1426275), (225, 1179054), (270, 982545), (279, 950850), (310, 855765), (405, 655030), (450, 589527), (465, 570510), (558, 475425), (675, 393018), (775, 342306), (810, 327515), (837, 316950), (930, 285255), (1350, 196509), (1395, 190170), (1550, 171153), (1674, 158475), (2025, 131006), (2113, 125550), (2325, 114102), (2511, 105650), (2790, 95085), (4050, 65503), (4185, 63390), (4226, 62775), (4650, 57051), (5022, 52825), (6339, 41850), (6975, 38034), (8370, 31695), (10565, 25110), (12555, 21130), (12678, 20925), (13950, 19017)]