81813240

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1$

素因数の和:488

約数の個数: 192

約数和(自身を含む): 290908800

約数和(自身を除く): 209095560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 81, 90, 95, 108, 114, 120, 135, 152, 162, 171, 180, 190, 216, 228, 243, 270, 285, 324, 342, 360, 380, 405, 443, 456, 486, 513, 540, 570, 648, 684, 760, 810, 855, 886, 972, 1026, 1080, 1140, 1215, 1329, 1368, 1539, 1620, 1710, 1772, 1944, 2052, 2215, 2280, 2430, 2565, 2658, 3078, 3240, 3420, 3544, 3987, 4104, 4430, 4617, 4860, 5130, 5316, 6156, 6645, 6840, 7695, 7974, 8417, 8860, 9234, 9720, 10260, 10632, 11961, 12312, 13290, 15390, 15948, 16834, 17720, 18468, 19935, 20520, 23085, 23922, 25251, 26580, 30780, 31896, 33668, 35883, 36936, 39870, 42085, 46170, 47844, 50502, 53160, 59805, 61560, 67336, 71766, 75753, 79740, 84170, 92340, 95688, 101004, 107649, 119610, 126255, 143532, 151506, 159480, 168340, 179415, 184680, 202008, 215298, 227259, 239220, 252510, 287064, 303012, 336680, 358830, 378765, 430596, 454518, 478440, 505020, 538245, 606024, 681777, 717660, 757530, 861192, 909036, 1010040, 1076490, 1136295, 1363554, 1435320, 1515060, 1818072, 2045331, 2152980, 2272590, 2727108, 3030120, 3408885, 4090662, 4305960, 4545180, 5454216, 6817770, 8181324, 9090360, 10226655, 13635540, 16362648, 20453310, 27271080, 40906620, 81813240]

約数ペア:

[(1, 81813240), (2, 40906620), (3, 27271080), (4, 20453310), (5, 16362648), (6, 13635540), (8, 10226655), (9, 9090360), (10, 8181324), (12, 6817770), (15, 5454216), (18, 4545180), (19, 4305960), (20, 4090662), (24, 3408885), (27, 3030120), (30, 2727108), (36, 2272590), (38, 2152980), (40, 2045331), (45, 1818072), (54, 1515060), (57, 1435320), (60, 1363554), (72, 1136295), (76, 1076490), (81, 1010040), (90, 909036), (95, 861192), (108, 757530), (114, 717660), (120, 681777), (135, 606024), (152, 538245), (162, 505020), (171, 478440), (180, 454518), (190, 430596), (216, 378765), (228, 358830), (243, 336680), (270, 303012), (285, 287064), (324, 252510), (342, 239220), (360, 227259), (380, 215298), (405, 202008), (443, 184680), (456, 179415), (486, 168340), (513, 159480), (540, 151506), (570, 143532), (648, 126255), (684, 119610), (760, 107649), (810, 101004), (855, 95688), (886, 92340), (972, 84170), (1026, 79740), (1080, 75753), (1140, 71766), (1215, 67336), (1329, 61560), (1368, 59805), (1539, 53160), (1620, 50502), (1710, 47844), (1772, 46170), (1944, 42085), (2052, 39870), (2215, 36936), (2280, 35883), (2430, 33668), (2565, 31896), (2658, 30780), (3078, 26580), (3240, 25251), (3420, 23922), (3544, 23085), (3987, 20520), (4104, 19935), (4430, 18468), (4617, 17720), (4860, 16834), (5130, 15948), (5316, 15390), (6156, 13290), (6645, 12312), (6840, 11961), (7695, 10632), (7974, 10260), (8417, 9720), (8860, 9234)]