78317980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 199221120

約数和(自身を除く): 120903140

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 29, 34, 47, 52, 58, 65, 68, 85, 94, 116, 130, 145, 169, 170, 188, 221, 235, 260, 290, 338, 340, 377, 442, 470, 493, 580, 611, 676, 754, 799, 845, 884, 940, 986, 1105, 1222, 1363, 1508, 1598, 1690, 1885, 1972, 2210, 2444, 2465, 2726, 2873, 3055, 3196, 3380, 3770, 3995, 4420, 4901, 4930, 5452, 5746, 6110, 6409, 6815, 7540, 7943, 7990, 9802, 9860, 10387, 11492, 12220, 12818, 13630, 14365, 15886, 15980, 17719, 19604, 20774, 23171, 24505, 25636, 27260, 28730, 31772, 32045, 35438, 39715, 41548, 46342, 49010, 51935, 57460, 64090, 70876, 79430, 83317, 88595, 92684, 98020, 103870, 115855, 128180, 135031, 158860, 166634, 177190, 207740, 230347, 231710, 270062, 301223, 333268, 354380, 416585, 460694, 463420, 540124, 602446, 675155, 833170, 921388, 1151735, 1204892, 1350310, 1506115, 1666340, 2303470, 2700620, 3012230, 3915899, 4606940, 6024460, 7831798, 15663596, 19579495, 39158990, 78317980]

約数ペア:

[(1, 78317980), (2, 39158990), (4, 19579495), (5, 15663596), (10, 7831798), (13, 6024460), (17, 4606940), (20, 3915899), (26, 3012230), (29, 2700620), (34, 2303470), (47, 1666340), (52, 1506115), (58, 1350310), (65, 1204892), (68, 1151735), (85, 921388), (94, 833170), (116, 675155), (130, 602446), (145, 540124), (169, 463420), (170, 460694), (188, 416585), (221, 354380), (235, 333268), (260, 301223), (290, 270062), (338, 231710), (340, 230347), (377, 207740), (442, 177190), (470, 166634), (493, 158860), (580, 135031), (611, 128180), (676, 115855), (754, 103870), (799, 98020), (845, 92684), (884, 88595), (940, 83317), (986, 79430), (1105, 70876), (1222, 64090), (1363, 57460), (1508, 51935), (1598, 49010), (1690, 46342), (1885, 41548), (1972, 39715), (2210, 35438), (2444, 32045), (2465, 31772), (2726, 28730), (2873, 27260), (3055, 25636), (3196, 24505), (3380, 23171), (3770, 20774), (3995, 19604), (4420, 17719), (4901, 15980), (4930, 15886), (5452, 14365), (5746, 13630), (6110, 12818), (6409, 12220), (6815, 11492), (7540, 10387), (7943, 9860), (7990, 9802)]