30880720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1291}}^1$

素因数の和:1340

約数の個数: 80

約数和(自身を含む): 80744832

約数和(自身を除く): 49864112

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1291, 1495, 1840, 2392, 2582, 2990, 4784, 5164, 5980, 6455, 10328, 11960, 12910, 16783, 20656, 23920, 25820, 29693, 33566, 51640, 59386, 67132, 83915, 103280, 118772, 134264, 148465, 167830, 237544, 268528, 296930, 335660, 386009, 475088, 593860, 671320, 772018, 1187720, 1342640, 1544036, 1930045, 2375440, 3088072, 3860090, 6176144, 7720180, 15440360, 30880720]

約数ペア:

[(1, 30880720), (2, 15440360), (4, 7720180), (5, 6176144), (8, 3860090), (10, 3088072), (13, 2375440), (16, 1930045), (20, 1544036), (23, 1342640), (26, 1187720), (40, 772018), (46, 671320), (52, 593860), (65, 475088), (80, 386009), (92, 335660), (104, 296930), (115, 268528), (130, 237544), (184, 167830), (208, 148465), (230, 134264), (260, 118772), (299, 103280), (368, 83915), (460, 67132), (520, 59386), (598, 51640), (920, 33566), (1040, 29693), (1196, 25820), (1291, 23920), (1495, 20656), (1840, 16783), (2392, 12910), (2582, 11960), (2990, 10328), (4784, 6455), (5164, 5980)]