390260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:120

約数の個数: 48

約数和(自身を含む): 940800

約数和(自身を除く): 550540

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 79, 95, 130, 158, 190, 247, 260, 316, 380, 395, 494, 790, 988, 1027, 1235, 1501, 1580, 2054, 2470, 3002, 4108, 4940, 5135, 6004, 7505, 10270, 15010, 19513, 20540, 30020, 39026, 78052, 97565, 195130, 390260]

約数ペア:

[(1, 390260), (2, 195130), (4, 97565), (5, 78052), (10, 39026), (13, 30020), (19, 20540), (20, 19513), (26, 15010), (38, 10270), (52, 7505), (65, 6004), (76, 5135), (79, 4940), (95, 4108), (130, 3002), (158, 2470), (190, 2054), (247, 1580), (260, 1501), (316, 1235), (380, 1027), (395, 988), (494, 790)]