18919440

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:502

約数の個数: 160

約数和(自身を含む): 68745600

約数和(自身を除く): 49826160

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, 461, 513, 540, 570, 684, 720, 760, 855, 912, 922, 1026, 1080, 1140, 1368, 1383, 1520, 1710, 1844, 2052, 2160, 2280, 2305, 2565, 2736, 2766, 3420, 3688, 4104, 4149, 4560, 4610, 5130, 5532, 6840, 6915, 7376, 8208, 8298, 8759, 9220, 10260, 11064, 12447, 13680, 13830, 16596, 17518, 18440, 20520, 20745, 22128, 24894, 26277, 27660, 33192, 35036, 36880, 41040, 41490, 43795, 49788, 52554, 55320, 62235, 66384, 70072, 78831, 82980, 87590, 99576, 105108, 110640, 124470, 131385, 140144, 157662, 165960, 175180, 199152, 210216, 236493, 248940, 262770, 315324, 331920, 350360, 394155, 420432, 472986, 497880, 525540, 630648, 700720, 788310, 945972, 995760, 1051080, 1182465, 1261296, 1576620, 1891944, 2102160, 2364930, 3153240, 3783888, 4729860, 6306480, 9459720, 18919440]

約数ペア:

[(1, 18919440), (2, 9459720), (3, 6306480), (4, 4729860), (5, 3783888), (6, 3153240), (8, 2364930), (9, 2102160), (10, 1891944), (12, 1576620), (15, 1261296), (16, 1182465), (18, 1051080), (19, 995760), (20, 945972), (24, 788310), (27, 700720), (30, 630648), (36, 525540), (38, 497880), (40, 472986), (45, 420432), (48, 394155), (54, 350360), (57, 331920), (60, 315324), (72, 262770), (76, 248940), (80, 236493), (90, 210216), (95, 199152), (108, 175180), (114, 165960), (120, 157662), (135, 140144), (144, 131385), (152, 124470), (171, 110640), (180, 105108), (190, 99576), (216, 87590), (228, 82980), (240, 78831), (270, 70072), (285, 66384), (304, 62235), (342, 55320), (360, 52554), (380, 49788), (432, 43795), (456, 41490), (461, 41040), (513, 36880), (540, 35036), (570, 33192), (684, 27660), (720, 26277), (760, 24894), (855, 22128), (912, 20745), (922, 20520), (1026, 18440), (1080, 17518), (1140, 16596), (1368, 13830), (1383, 13680), (1520, 12447), (1710, 11064), (1844, 10260), (2052, 9220), (2160, 8759), (2280, 8298), (2305, 8208), (2565, 7376), (2736, 6915), (2766, 6840), (3420, 5532), (3688, 5130), (4104, 4610), (4149, 4560)]