28274015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 46006272

約数和(自身を除く): 17732257

約数列:

[1, 5, 7, 11, 23, 31, 35, 55, 77, 103, 115, 155, 161, 217, 253, 341, 385, 515, 713, 721, 805, 1085, 1133, 1265, 1705, 1771, 2369, 2387, 3193, 3565, 3605, 4991, 5665, 7843, 7931, 8855, 11845, 11935, 15965, 16583, 22351, 24955, 26059, 35123, 39215, 39655, 54901, 73439, 82915, 111755, 130295, 175615, 182413, 245861, 274505, 367195, 514073, 807829, 912065, 1229305, 2570365, 4039145, 5654803, 28274015]

約数ペア:

[(1, 28274015), (5, 5654803), (7, 4039145), (11, 2570365), (23, 1229305), (31, 912065), (35, 807829), (55, 514073), (77, 367195), (103, 274505), (115, 245861), (155, 182413), (161, 175615), (217, 130295), (253, 111755), (341, 82915), (385, 73439), (515, 54901), (713, 39655), (721, 39215), (805, 35123), (1085, 26059), (1133, 24955), (1265, 22351), (1705, 16583), (1771, 15965), (2369, 11935), (2387, 11845), (3193, 8855), (3565, 7931), (3605, 7843), (4991, 5665)]