18901960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:84

約数の個数: 192

約数和(自身を含む): 59253120

約数和(自身を除く): 40351160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 17, 19, 20, 22, 28, 34, 35, 38, 40, 44, 55, 56, 68, 70, 76, 77, 85, 88, 95, 110, 119, 133, 136, 140, 152, 154, 170, 187, 190, 209, 220, 238, 266, 280, 308, 323, 340, 361, 374, 380, 385, 418, 440, 476, 532, 595, 616, 646, 665, 680, 722, 748, 760, 770, 836, 935, 952, 1045, 1064, 1190, 1292, 1309, 1330, 1444, 1463, 1496, 1540, 1615, 1672, 1805, 1870, 2090, 2261, 2380, 2527, 2584, 2618, 2660, 2888, 2926, 3080, 3230, 3553, 3610, 3740, 3971, 4180, 4522, 4760, 5054, 5236, 5320, 5852, 6137, 6460, 6545, 7106, 7220, 7315, 7480, 7942, 8360, 9044, 10108, 10472, 11305, 11704, 12274, 12635, 12920, 13090, 14212, 14440, 14630, 15884, 17765, 18088, 19855, 20216, 22610, 24548, 24871, 25270, 26180, 27797, 28424, 29260, 30685, 31768, 35530, 39710, 42959, 45220, 49096, 49742, 50540, 52360, 55594, 58520, 61370, 67507, 71060, 79420, 85918, 90440, 99484, 101080, 111188, 122740, 124355, 135014, 138985, 142120, 158840, 171836, 198968, 214795, 222376, 245480, 248710, 270028, 277970, 337535, 343672, 429590, 472549, 497420, 540056, 555940, 675070, 859180, 945098, 994840, 1111880, 1350140, 1718360, 1890196, 2362745, 2700280, 3780392, 4725490, 9450980, 18901960]

約数ペア:

[(1, 18901960), (2, 9450980), (4, 4725490), (5, 3780392), (7, 2700280), (8, 2362745), (10, 1890196), (11, 1718360), (14, 1350140), (17, 1111880), (19, 994840), (20, 945098), (22, 859180), (28, 675070), (34, 555940), (35, 540056), (38, 497420), (40, 472549), (44, 429590), (55, 343672), (56, 337535), (68, 277970), (70, 270028), (76, 248710), (77, 245480), (85, 222376), (88, 214795), (95, 198968), (110, 171836), (119, 158840), (133, 142120), (136, 138985), (140, 135014), (152, 124355), (154, 122740), (170, 111188), (187, 101080), (190, 99484), (209, 90440), (220, 85918), (238, 79420), (266, 71060), (280, 67507), (308, 61370), (323, 58520), (340, 55594), (361, 52360), (374, 50540), (380, 49742), (385, 49096), (418, 45220), (440, 42959), (476, 39710), (532, 35530), (595, 31768), (616, 30685), (646, 29260), (665, 28424), (680, 27797), (722, 26180), (748, 25270), (760, 24871), (770, 24548), (836, 22610), (935, 20216), (952, 19855), (1045, 18088), (1064, 17765), (1190, 15884), (1292, 14630), (1309, 14440), (1330, 14212), (1444, 13090), (1463, 12920), (1496, 12635), (1540, 12274), (1615, 11704), (1672, 11305), (1805, 10472), (1870, 10108), (2090, 9044), (2261, 8360), (2380, 7942), (2527, 7480), (2584, 7315), (2618, 7220), (2660, 7106), (2888, 6545), (2926, 6460), (3080, 6137), (3230, 5852), (3553, 5320), (3610, 5236), (3740, 5054), (3971, 4760), (4180, 4522)]