81780840

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:653

約数の個数: 160

約数和(自身を含む): 281746080

約数和(自身を除く): 199965240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 43, 45, 54, 60, 72, 81, 86, 90, 108, 120, 129, 135, 162, 172, 180, 215, 216, 258, 270, 324, 344, 360, 387, 405, 430, 516, 540, 587, 645, 648, 774, 810, 860, 1032, 1080, 1161, 1174, 1290, 1548, 1620, 1720, 1761, 1935, 2322, 2348, 2580, 2935, 3096, 3240, 3483, 3522, 3870, 4644, 4696, 5160, 5283, 5805, 5870, 6966, 7044, 7740, 8805, 9288, 10566, 11610, 11740, 13932, 14088, 15480, 15849, 17415, 17610, 21132, 23220, 23480, 25241, 26415, 27864, 31698, 34830, 35220, 42264, 46440, 47547, 50482, 52830, 63396, 69660, 70440, 75723, 79245, 95094, 100964, 105660, 126205, 126792, 139320, 151446, 158490, 190188, 201928, 211320, 227169, 237735, 252410, 302892, 316980, 378615, 380376, 454338, 475470, 504820, 605784, 633960, 681507, 757230, 908676, 950940, 1009640, 1135845, 1363014, 1514460, 1817352, 1901880, 2044521, 2271690, 2726028, 3028920, 3407535, 4089042, 4543380, 5452056, 6815070, 8178084, 9086760, 10222605, 13630140, 16356168, 20445210, 27260280, 40890420, 81780840]

約数ペア:

[(1, 81780840), (2, 40890420), (3, 27260280), (4, 20445210), (5, 16356168), (6, 13630140), (8, 10222605), (9, 9086760), (10, 8178084), (12, 6815070), (15, 5452056), (18, 4543380), (20, 4089042), (24, 3407535), (27, 3028920), (30, 2726028), (36, 2271690), (40, 2044521), (43, 1901880), (45, 1817352), (54, 1514460), (60, 1363014), (72, 1135845), (81, 1009640), (86, 950940), (90, 908676), (108, 757230), (120, 681507), (129, 633960), (135, 605784), (162, 504820), (172, 475470), (180, 454338), (215, 380376), (216, 378615), (258, 316980), (270, 302892), (324, 252410), (344, 237735), (360, 227169), (387, 211320), (405, 201928), (430, 190188), (516, 158490), (540, 151446), (587, 139320), (645, 126792), (648, 126205), (774, 105660), (810, 100964), (860, 95094), (1032, 79245), (1080, 75723), (1161, 70440), (1174, 69660), (1290, 63396), (1548, 52830), (1620, 50482), (1720, 47547), (1761, 46440), (1935, 42264), (2322, 35220), (2348, 34830), (2580, 31698), (2935, 27864), (3096, 26415), (3240, 25241), (3483, 23480), (3522, 23220), (3870, 21132), (4644, 17610), (4696, 17415), (5160, 15849), (5283, 15480), (5805, 14088), (5870, 13932), (6966, 11740), (7044, 11610), (7740, 10566), (8805, 9288)]