15420660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 44523360

約数和(自身を除く): 29102700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 139, 172, 215, 258, 278, 417, 430, 516, 556, 645, 695, 834, 860, 1290, 1390, 1668, 1849, 2085, 2580, 2780, 3698, 4170, 5547, 5977, 7396, 8340, 9245, 11094, 11954, 17931, 18490, 22188, 23908, 27735, 29885, 35862, 36980, 55470, 59770, 71724, 89655, 110940, 119540, 179310, 257011, 358620, 514022, 771033, 1028044, 1285055, 1542066, 2570110, 3084132, 3855165, 5140220, 7710330, 15420660]

約数ペア:

[(1, 15420660), (2, 7710330), (3, 5140220), (4, 3855165), (5, 3084132), (6, 2570110), (10, 1542066), (12, 1285055), (15, 1028044), (20, 771033), (30, 514022), (43, 358620), (60, 257011), (86, 179310), (129, 119540), (139, 110940), (172, 89655), (215, 71724), (258, 59770), (278, 55470), (417, 36980), (430, 35862), (516, 29885), (556, 27735), (645, 23908), (695, 22188), (834, 18490), (860, 17931), (1290, 11954), (1390, 11094), (1668, 9245), (1849, 8340), (2085, 7396), (2580, 5977), (2780, 5547), (3698, 4170)]