28504385

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 43568640

約数和(自身を除く): 15064255

約数列:

[1, 5, 7, 13, 35, 61, 65, 79, 91, 169, 305, 395, 427, 455, 553, 793, 845, 1027, 1183, 2135, 2765, 3965, 4819, 5135, 5551, 5915, 7189, 10309, 13351, 24095, 27755, 33733, 35945, 51545, 62647, 66755, 72163, 93457, 168665, 313235, 360815, 438529, 467285, 814411, 2192645, 4072055, 5700877, 28504385]

約数ペア:

[(1, 28504385), (5, 5700877), (7, 4072055), (13, 2192645), (35, 814411), (61, 467285), (65, 438529), (79, 360815), (91, 313235), (169, 168665), (305, 93457), (395, 72163), (427, 66755), (455, 62647), (553, 51545), (793, 35945), (845, 33733), (1027, 27755), (1183, 24095), (2135, 13351), (2765, 10309), (3965, 7189), (4819, 5915), (5135, 5551)]