20017740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 96

約数和(自身を含む): 58834944

約数和(自身を除く): 38817204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 71, 74, 111, 127, 142, 148, 185, 213, 222, 254, 284, 355, 370, 381, 426, 444, 508, 555, 635, 710, 740, 762, 852, 1065, 1110, 1270, 1420, 1524, 1905, 2130, 2220, 2540, 2627, 3810, 4260, 4699, 5254, 7620, 7881, 9017, 9398, 10508, 13135, 14097, 15762, 18034, 18796, 23495, 26270, 27051, 28194, 31524, 36068, 39405, 45085, 46990, 52540, 54102, 56388, 70485, 78810, 90170, 93980, 108204, 135255, 140970, 157620, 180340, 270510, 281940, 333629, 541020, 667258, 1000887, 1334516, 1668145, 2001774, 3336290, 4003548, 5004435, 6672580, 10008870, 20017740]

約数ペア:

[(1, 20017740), (2, 10008870), (3, 6672580), (4, 5004435), (5, 4003548), (6, 3336290), (10, 2001774), (12, 1668145), (15, 1334516), (20, 1000887), (30, 667258), (37, 541020), (60, 333629), (71, 281940), (74, 270510), (111, 180340), (127, 157620), (142, 140970), (148, 135255), (185, 108204), (213, 93980), (222, 90170), (254, 78810), (284, 70485), (355, 56388), (370, 54102), (381, 52540), (426, 46990), (444, 45085), (508, 39405), (555, 36068), (635, 31524), (710, 28194), (740, 27051), (762, 26270), (852, 23495), (1065, 18796), (1110, 18034), (1270, 15762), (1420, 14097), (1524, 13135), (1905, 10508), (2130, 9398), (2220, 9017), (2540, 7881), (2627, 7620), (3810, 5254), (4260, 4699)]