257696340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{390449}}^1$

素因数の和:390472

約数の個数: 48

約数和(自身を含む): 787147200

約数和(自身を除く): 529450860

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 390449, 780898, 1171347, 1561796, 1952245, 2342694, 3904490, 4294939, 4685388, 5856735, 7808980, 8589878, 11713470, 12884817, 17179756, 21474695, 23426940, 25769634, 42949390, 51539268, 64424085, 85898780, 128848170, 257696340]

約数ペア:

[(1, 257696340), (2, 128848170), (3, 85898780), (4, 64424085), (5, 51539268), (6, 42949390), (10, 25769634), (11, 23426940), (12, 21474695), (15, 17179756), (20, 12884817), (22, 11713470), (30, 8589878), (33, 7808980), (44, 5856735), (55, 4685388), (60, 4294939), (66, 3904490), (110, 2342694), (132, 1952245), (165, 1561796), (220, 1171347), (330, 780898), (660, 390449)]