388716640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{186883}}^1$

素因数の和:186911

約数の個数: 48

約数和(自身を含む): 988990128

約数和(自身を除く): 600273488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 186883, 373766, 747532, 934415, 1495064, 1868830, 2429479, 2990128, 3737660, 4858958, 5980256, 7475320, 9717916, 12147395, 14950640, 19435832, 24294790, 29901280, 38871664, 48589580, 77743328, 97179160, 194358320, 388716640]

約数ペア:

[(1, 388716640), (2, 194358320), (4, 97179160), (5, 77743328), (8, 48589580), (10, 38871664), (13, 29901280), (16, 24294790), (20, 19435832), (26, 14950640), (32, 12147395), (40, 9717916), (52, 7475320), (65, 5980256), (80, 4858958), (104, 3737660), (130, 2990128), (160, 2429479), (208, 1868830), (260, 1495064), (416, 934415), (520, 747532), (1040, 373766), (2080, 186883)]