28121960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22679}}^1$

素因数の和:22721

約数の個数: 32

約数和(自身を含む): 65318400

約数和(自身を除く): 37196440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 22679, 45358, 90716, 113395, 181432, 226790, 453580, 703049, 907160, 1406098, 2812196, 3515245, 5624392, 7030490, 14060980, 28121960]

約数ペア:

[(1, 28121960), (2, 14060980), (4, 7030490), (5, 5624392), (8, 3515245), (10, 2812196), (20, 1406098), (31, 907160), (40, 703049), (62, 453580), (124, 226790), (155, 181432), (248, 113395), (310, 90716), (620, 45358), (1240, 22679)]