19958680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{599}}^1$

素因数の和:641

約数の個数: 96

約数和(自身を含む): 55404000

約数和(自身を除く): 35445320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 85, 98, 119, 136, 140, 170, 196, 238, 245, 280, 340, 392, 476, 490, 595, 599, 680, 833, 952, 980, 1190, 1198, 1666, 1960, 2380, 2396, 2995, 3332, 4165, 4193, 4760, 4792, 5990, 6664, 8330, 8386, 10183, 11980, 16660, 16772, 20366, 20965, 23960, 29351, 33320, 33544, 40732, 41930, 50915, 58702, 71281, 81464, 83860, 101830, 117404, 142562, 146755, 167720, 203660, 234808, 285124, 293510, 356405, 407320, 498967, 570248, 587020, 712810, 997934, 1174040, 1425620, 1995868, 2494835, 2851240, 3991736, 4989670, 9979340, 19958680]

約数ペア:

[(1, 19958680), (2, 9979340), (4, 4989670), (5, 3991736), (7, 2851240), (8, 2494835), (10, 1995868), (14, 1425620), (17, 1174040), (20, 997934), (28, 712810), (34, 587020), (35, 570248), (40, 498967), (49, 407320), (56, 356405), (68, 293510), (70, 285124), (85, 234808), (98, 203660), (119, 167720), (136, 146755), (140, 142562), (170, 117404), (196, 101830), (238, 83860), (245, 81464), (280, 71281), (340, 58702), (392, 50915), (476, 41930), (490, 40732), (595, 33544), (599, 33320), (680, 29351), (833, 23960), (952, 20965), (980, 20366), (1190, 16772), (1198, 16660), (1666, 11980), (1960, 10183), (2380, 8386), (2396, 8330), (2995, 6664), (3332, 5990), (4165, 4792), (4193, 4760)]