28511580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 82050192

約数和(自身を除く): 53538612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 257, 258, 430, 514, 516, 645, 771, 860, 1028, 1285, 1290, 1542, 1849, 2570, 2580, 3084, 3698, 3855, 5140, 5547, 7396, 7710, 9245, 11051, 11094, 15420, 18490, 22102, 22188, 27735, 33153, 36980, 44204, 55255, 55470, 66306, 110510, 110940, 132612, 165765, 221020, 331530, 475193, 663060, 950386, 1425579, 1900772, 2375965, 2851158, 4751930, 5702316, 7127895, 9503860, 14255790, 28511580]

約数ペア:

[(1, 28511580), (2, 14255790), (3, 9503860), (4, 7127895), (5, 5702316), (6, 4751930), (10, 2851158), (12, 2375965), (15, 1900772), (20, 1425579), (30, 950386), (43, 663060), (60, 475193), (86, 331530), (129, 221020), (172, 165765), (215, 132612), (257, 110940), (258, 110510), (430, 66306), (514, 55470), (516, 55255), (645, 44204), (771, 36980), (860, 33153), (1028, 27735), (1285, 22188), (1290, 22102), (1542, 18490), (1849, 15420), (2570, 11094), (2580, 11051), (3084, 9245), (3698, 7710), (3855, 7396), (5140, 5547)]