1900991904940

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{787}}^1\times {\mathrm{252139}}^1$

素因数の和:253414

約数の個数: 48

約数和(自身を含む): 4005516211200

約数和(自身を除く): 2104524306260

約数列:

[1, 2, 4, 5, 10, 20, 479, 787, 958, 1574, 1916, 2395, 3148, 3935, 4790, 7870, 9580, 15740, 252139, 376973, 504278, 753946, 1008556, 1260695, 1507892, 1884865, 2521390, 3769730, 5042780, 7539460, 120774581, 198433393, 241549162, 396866786, 483098324, 603872905, 793733572, 992166965, 1207745810, 1984333930, 2415491620, 3968667860, 95049595247, 190099190494, 380198380988, 475247976235, 950495952470, 1900991904940]

約数ペア:

[(1, 1900991904940), (2, 950495952470), (4, 475247976235), (5, 380198380988), (10, 190099190494), (20, 95049595247), (479, 3968667860), (787, 2415491620), (958, 1984333930), (1574, 1207745810), (1916, 992166965), (2395, 793733572), (3148, 603872905), (3935, 483098324), (4790, 396866786), (7870, 241549162), (9580, 198433393), (15740, 120774581), (252139, 7539460), (376973, 5042780), (504278, 3769730), (753946, 2521390), (1008556, 1884865), (1260695, 1507892)]