81546480

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1987}}^1$

素因数の和:2028

約数の個数: 160

約数和(自身を含む): 295814400

約数和(自身を除く): 214267920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 90, 95, 108, 114, 120, 135, 144, 152, 171, 180, 190, 216, 228, 240, 270, 285, 304, 342, 360, 380, 432, 456, 513, 540, 570, 684, 720, 760, 855, 912, 1026, 1080, 1140, 1368, 1520, 1710, 1987, 2052, 2160, 2280, 2565, 2736, 3420, 3974, 4104, 4560, 5130, 5961, 6840, 7948, 8208, 9935, 10260, 11922, 13680, 15896, 17883, 19870, 20520, 23844, 29805, 31792, 35766, 37753, 39740, 41040, 47688, 53649, 59610, 71532, 75506, 79480, 89415, 95376, 107298, 113259, 119220, 143064, 151012, 158960, 178830, 188765, 214596, 226518, 238440, 268245, 286128, 302024, 339777, 357660, 377530, 429192, 453036, 476880, 536490, 566295, 604048, 679554, 715320, 755060, 858384, 906072, 1019331, 1072980, 1132590, 1359108, 1430640, 1510120, 1698885, 1812144, 2038662, 2145960, 2265180, 2718216, 3020240, 3397770, 4077324, 4291920, 4530360, 5096655, 5436432, 6795540, 8154648, 9060720, 10193310, 13591080, 16309296, 20386620, 27182160, 40773240, 81546480]

約数ペア:

[(1, 81546480), (2, 40773240), (3, 27182160), (4, 20386620), (5, 16309296), (6, 13591080), (8, 10193310), (9, 9060720), (10, 8154648), (12, 6795540), (15, 5436432), (16, 5096655), (18, 4530360), (19, 4291920), (20, 4077324), (24, 3397770), (27, 3020240), (30, 2718216), (36, 2265180), (38, 2145960), (40, 2038662), (45, 1812144), (48, 1698885), (54, 1510120), (57, 1430640), (60, 1359108), (72, 1132590), (76, 1072980), (80, 1019331), (90, 906072), (95, 858384), (108, 755060), (114, 715320), (120, 679554), (135, 604048), (144, 566295), (152, 536490), (171, 476880), (180, 453036), (190, 429192), (216, 377530), (228, 357660), (240, 339777), (270, 302024), (285, 286128), (304, 268245), (342, 238440), (360, 226518), (380, 214596), (432, 188765), (456, 178830), (513, 158960), (540, 151012), (570, 143064), (684, 119220), (720, 113259), (760, 107298), (855, 95376), (912, 89415), (1026, 79480), (1080, 75506), (1140, 71532), (1368, 59610), (1520, 53649), (1710, 47688), (1987, 41040), (2052, 39740), (2160, 37753), (2280, 35766), (2565, 31792), (2736, 29805), (3420, 23844), (3974, 20520), (4104, 19870), (4560, 17883), (5130, 15896), (5961, 13680), (6840, 11922), (7948, 10260), (8208, 9935)]