19649960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:147

約数の個数: 128

約数和(自身を含む): 53187840

約数和(自身を除く): 33537880

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 37, 40, 44, 55, 68, 71, 74, 85, 88, 110, 136, 142, 148, 170, 185, 187, 220, 284, 296, 340, 355, 370, 374, 407, 440, 568, 629, 680, 710, 740, 748, 781, 814, 935, 1207, 1258, 1420, 1480, 1496, 1562, 1628, 1870, 2035, 2414, 2516, 2627, 2840, 3124, 3145, 3256, 3740, 3905, 4070, 4828, 5032, 5254, 6035, 6248, 6290, 6919, 7480, 7810, 8140, 9656, 10508, 12070, 12580, 13135, 13277, 13838, 15620, 16280, 21016, 24140, 25160, 26270, 26554, 27676, 28897, 31240, 34595, 44659, 48280, 52540, 53108, 55352, 57794, 66385, 69190, 89318, 105080, 106216, 115588, 132770, 138380, 144485, 178636, 223295, 231176, 265540, 276760, 288970, 357272, 446590, 491249, 531080, 577940, 893180, 982498, 1155880, 1786360, 1964996, 2456245, 3929992, 4912490, 9824980, 19649960]

約数ペア:

[(1, 19649960), (2, 9824980), (4, 4912490), (5, 3929992), (8, 2456245), (10, 1964996), (11, 1786360), (17, 1155880), (20, 982498), (22, 893180), (34, 577940), (37, 531080), (40, 491249), (44, 446590), (55, 357272), (68, 288970), (71, 276760), (74, 265540), (85, 231176), (88, 223295), (110, 178636), (136, 144485), (142, 138380), (148, 132770), (170, 115588), (185, 106216), (187, 105080), (220, 89318), (284, 69190), (296, 66385), (340, 57794), (355, 55352), (370, 53108), (374, 52540), (407, 48280), (440, 44659), (568, 34595), (629, 31240), (680, 28897), (710, 27676), (740, 26554), (748, 26270), (781, 25160), (814, 24140), (935, 21016), (1207, 16280), (1258, 15620), (1420, 13838), (1480, 13277), (1496, 13135), (1562, 12580), (1628, 12070), (1870, 10508), (2035, 9656), (2414, 8140), (2516, 7810), (2627, 7480), (2840, 6919), (3124, 6290), (3145, 6248), (3256, 6035), (3740, 5254), (3905, 5032), (4070, 4828)]