80540500

素因数分解:

$2^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{2039}}^1$

素因数の和:2137

約数の個数: 48

約数和(自身を含む): 178214400

約数和(自身を除く): 97673900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 500, 790, 1580, 1975, 2039, 3950, 4078, 7900, 8156, 9875, 10195, 19750, 20390, 39500, 40780, 50975, 101950, 161081, 203900, 254875, 322162, 509750, 644324, 805405, 1019500, 1610810, 3221620, 4027025, 8054050, 16108100, 20135125, 40270250, 80540500]

約数ペア:

[(1, 80540500), (2, 40270250), (4, 20135125), (5, 16108100), (10, 8054050), (20, 4027025), (25, 3221620), (50, 1610810), (79, 1019500), (100, 805405), (125, 644324), (158, 509750), (250, 322162), (316, 254875), (395, 203900), (500, 161081), (790, 101950), (1580, 50975), (1975, 40780), (2039, 39500), (3950, 20390), (4078, 19750), (7900, 10195), (8156, 9875)]