138289840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{132971}}^1$

素因数の和:132997

約数の個数: 40

約数和(自身を含む): 346259088

約数和(自身を除く): 207969248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 132971, 265942, 531884, 664855, 1063768, 1329710, 1728623, 2127536, 2659420, 3457246, 5318840, 6914492, 8643115, 10637680, 13828984, 17286230, 27657968, 34572460, 69144920, 138289840]

約数ペア:

[(1, 138289840), (2, 69144920), (4, 34572460), (5, 27657968), (8, 17286230), (10, 13828984), (13, 10637680), (16, 8643115), (20, 6914492), (26, 5318840), (40, 3457246), (52, 2659420), (65, 2127536), (80, 1728623), (104, 1329710), (130, 1063768), (208, 664855), (260, 531884), (520, 265942), (1040, 132971)]