312711620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{19717}}^1$

素因数の和:19800

約数の個数: 48

約数和(自身を含む): 718839408

約数和(自身を除く): 406127788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 7930, 15860, 19717, 39434, 78868, 98585, 197170, 256321, 394340, 512642, 1025284, 1202737, 1281605, 2405474, 2563210, 4810948, 5126420, 6013685, 12027370, 15635581, 24054740, 31271162, 62542324, 78177905, 156355810, 312711620]

約数ペア:

[(1, 312711620), (2, 156355810), (4, 78177905), (5, 62542324), (10, 31271162), (13, 24054740), (20, 15635581), (26, 12027370), (52, 6013685), (61, 5126420), (65, 4810948), (122, 2563210), (130, 2405474), (244, 1281605), (260, 1202737), (305, 1025284), (610, 512642), (793, 394340), (1220, 256321), (1586, 197170), (3172, 98585), (3965, 78868), (7930, 39434), (15860, 19717)]