18805540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{479}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 24094940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 151, 260, 302, 479, 604, 755, 958, 1510, 1916, 1963, 2395, 3020, 3926, 4790, 6227, 7852, 9580, 9815, 12454, 19630, 24908, 31135, 39260, 62270, 72329, 124540, 144658, 289316, 361645, 723290, 940277, 1446580, 1880554, 3761108, 4701385, 9402770, 18805540]

約数ペア:

[(1, 18805540), (2, 9402770), (4, 4701385), (5, 3761108), (10, 1880554), (13, 1446580), (20, 940277), (26, 723290), (52, 361645), (65, 289316), (130, 144658), (151, 124540), (260, 72329), (302, 62270), (479, 39260), (604, 31135), (755, 24908), (958, 19630), (1510, 12454), (1916, 9815), (1963, 9580), (2395, 7852), (3020, 6227), (3926, 4790)]