28981365

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 56832000

約数和(自身を除く): 27850635

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 73, 95, 105, 133, 199, 219, 285, 365, 399, 511, 597, 665, 995, 1095, 1387, 1393, 1533, 1995, 2555, 2985, 3781, 4161, 4179, 6935, 6965, 7665, 9709, 11343, 14527, 18905, 20805, 20895, 26467, 29127, 43581, 48545, 56715, 72635, 79401, 101689, 132335, 145635, 217905, 276013, 305067, 397005, 508445, 828039, 1380065, 1525335, 1932091, 4140195, 5796273, 9660455, 28981365]

約数ペア:

[(1, 28981365), (3, 9660455), (5, 5796273), (7, 4140195), (15, 1932091), (19, 1525335), (21, 1380065), (35, 828039), (57, 508445), (73, 397005), (95, 305067), (105, 276013), (133, 217905), (199, 145635), (219, 132335), (285, 101689), (365, 79401), (399, 72635), (511, 56715), (597, 48545), (665, 43581), (995, 29127), (1095, 26467), (1387, 20895), (1393, 20805), (1533, 18905), (1995, 14527), (2555, 11343), (2985, 9709), (3781, 7665), (4161, 6965), (4179, 6935)]