19911240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 192

約数和(自身を含む): 70761600

約数和(自身を除く): 50850360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 41, 45, 57, 60, 71, 72, 76, 82, 90, 95, 114, 120, 123, 142, 152, 164, 171, 180, 190, 205, 213, 228, 246, 284, 285, 328, 342, 355, 360, 369, 380, 410, 426, 456, 492, 568, 570, 615, 639, 684, 710, 738, 760, 779, 820, 852, 855, 984, 1065, 1140, 1230, 1278, 1349, 1368, 1420, 1476, 1558, 1640, 1704, 1710, 1845, 2130, 2280, 2337, 2460, 2556, 2698, 2840, 2911, 2952, 3116, 3195, 3420, 3690, 3895, 4047, 4260, 4674, 4920, 5112, 5396, 5822, 6232, 6390, 6745, 6840, 7011, 7380, 7790, 8094, 8520, 8733, 9348, 10792, 11644, 11685, 12141, 12780, 13490, 14022, 14555, 14760, 15580, 16188, 17466, 18696, 20235, 23288, 23370, 24282, 25560, 26199, 26980, 28044, 29110, 31160, 32376, 34932, 35055, 40470, 43665, 46740, 48564, 52398, 53960, 55309, 56088, 58220, 60705, 69864, 70110, 80940, 87330, 93480, 97128, 104796, 110618, 116440, 121410, 130995, 140220, 161880, 165927, 174660, 209592, 221236, 242820, 261990, 276545, 280440, 331854, 349320, 442472, 485640, 497781, 523980, 553090, 663708, 829635, 995562, 1047960, 1106180, 1327416, 1659270, 1991124, 2212360, 2488905, 3318540, 3982248, 4977810, 6637080, 9955620, 19911240]

約数ペア:

[(1, 19911240), (2, 9955620), (3, 6637080), (4, 4977810), (5, 3982248), (6, 3318540), (8, 2488905), (9, 2212360), (10, 1991124), (12, 1659270), (15, 1327416), (18, 1106180), (19, 1047960), (20, 995562), (24, 829635), (30, 663708), (36, 553090), (38, 523980), (40, 497781), (41, 485640), (45, 442472), (57, 349320), (60, 331854), (71, 280440), (72, 276545), (76, 261990), (82, 242820), (90, 221236), (95, 209592), (114, 174660), (120, 165927), (123, 161880), (142, 140220), (152, 130995), (164, 121410), (171, 116440), (180, 110618), (190, 104796), (205, 97128), (213, 93480), (228, 87330), (246, 80940), (284, 70110), (285, 69864), (328, 60705), (342, 58220), (355, 56088), (360, 55309), (369, 53960), (380, 52398), (410, 48564), (426, 46740), (456, 43665), (492, 40470), (568, 35055), (570, 34932), (615, 32376), (639, 31160), (684, 29110), (710, 28044), (738, 26980), (760, 26199), (779, 25560), (820, 24282), (852, 23370), (855, 23288), (984, 20235), (1065, 18696), (1140, 17466), (1230, 16188), (1278, 15580), (1349, 14760), (1368, 14555), (1420, 14022), (1476, 13490), (1558, 12780), (1640, 12141), (1704, 11685), (1710, 11644), (1845, 10792), (2130, 9348), (2280, 8733), (2337, 8520), (2460, 8094), (2556, 7790), (2698, 7380), (2840, 7011), (2911, 6840), (2952, 6745), (3116, 6390), (3195, 6232), (3420, 5822), (3690, 5396), (3895, 5112), (4047, 4920), (4260, 4674)]