28736940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1091}}^1$

素因数の和:1542

約数の個数: 48

約数和(自身を含む): 80720640

約数和(自身を除く): 51983700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 439, 878, 1091, 1317, 1756, 2182, 2195, 2634, 3273, 4364, 4390, 5268, 5455, 6546, 6585, 8780, 10910, 13092, 13170, 16365, 21820, 26340, 32730, 65460, 478949, 957898, 1436847, 1915796, 2394745, 2873694, 4789490, 5747388, 7184235, 9578980, 14368470, 28736940]

約数ペア:

[(1, 28736940), (2, 14368470), (3, 9578980), (4, 7184235), (5, 5747388), (6, 4789490), (10, 2873694), (12, 2394745), (15, 1915796), (20, 1436847), (30, 957898), (60, 478949), (439, 65460), (878, 32730), (1091, 26340), (1317, 21820), (1756, 16365), (2182, 13170), (2195, 13092), (2634, 10910), (3273, 8780), (4364, 6585), (4390, 6546), (5268, 5455)]