28211505

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 53089344

約数和(自身を除く): 24877839

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 131, 147, 245, 293, 393, 655, 735, 879, 917, 1465, 1965, 2051, 2751, 4395, 4585, 6153, 6419, 10255, 13755, 14357, 19257, 30765, 32095, 38383, 43071, 71785, 96285, 115149, 191915, 215355, 268681, 575745, 806043, 1343405, 1880767, 4030215, 5642301, 9403835, 28211505]

約数ペア:

[(1, 28211505), (3, 9403835), (5, 5642301), (7, 4030215), (15, 1880767), (21, 1343405), (35, 806043), (49, 575745), (105, 268681), (131, 215355), (147, 191915), (245, 115149), (293, 96285), (393, 71785), (655, 43071), (735, 38383), (879, 32095), (917, 30765), (1465, 19257), (1965, 14357), (2051, 13755), (2751, 10255), (4395, 6419), (4585, 6153)]