18998320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21589}}^1$

素因数の和:21613

約数の個数: 40

約数和(自身を含む): 48188880

約数和(自身を除く): 29190560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21589, 43178, 86356, 107945, 172712, 215890, 237479, 345424, 431780, 474958, 863560, 949916, 1187395, 1727120, 1899832, 2374790, 3799664, 4749580, 9499160, 18998320]

約数ペア:

[(1, 18998320), (2, 9499160), (4, 4749580), (5, 3799664), (8, 2374790), (10, 1899832), (11, 1727120), (16, 1187395), (20, 949916), (22, 863560), (40, 474958), (44, 431780), (55, 345424), (80, 237479), (88, 215890), (110, 172712), (176, 107945), (220, 86356), (440, 43178), (880, 21589)]