19781310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 49641984

約数和(自身を除く): 29860674

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 37, 71, 74, 111, 142, 185, 213, 222, 251, 355, 370, 426, 502, 555, 710, 753, 1065, 1110, 1255, 1506, 2130, 2510, 2627, 3765, 5254, 7530, 7881, 9287, 13135, 15762, 17821, 18574, 26270, 27861, 35642, 39405, 46435, 53463, 55722, 78810, 89105, 92870, 106926, 139305, 178210, 267315, 278610, 534630, 659377, 1318754, 1978131, 3296885, 3956262, 6593770, 9890655, 19781310]

約数ペア:

[(1, 19781310), (2, 9890655), (3, 6593770), (5, 3956262), (6, 3296885), (10, 1978131), (15, 1318754), (30, 659377), (37, 534630), (71, 278610), (74, 267315), (111, 178210), (142, 139305), (185, 106926), (213, 92870), (222, 89105), (251, 78810), (355, 55722), (370, 53463), (426, 46435), (502, 39405), (555, 35642), (710, 27861), (753, 26270), (1065, 18574), (1110, 17821), (1255, 15762), (1506, 13135), (2130, 9287), (2510, 7881), (2627, 7530), (3765, 5254)]