28380275

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 45854208

約数和(自身を除く): 17473933

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 115, 161, 175, 253, 275, 385, 575, 641, 805, 1265, 1771, 1925, 3205, 4025, 4487, 6325, 7051, 8855, 14743, 16025, 22435, 35255, 44275, 49357, 73715, 103201, 112175, 162173, 176275, 246785, 368575, 516005, 810865, 1135211, 1233925, 2580025, 4054325, 5676055, 28380275]

約数ペア:

[(1, 28380275), (5, 5676055), (7, 4054325), (11, 2580025), (23, 1233925), (25, 1135211), (35, 810865), (55, 516005), (77, 368575), (115, 246785), (161, 176275), (175, 162173), (253, 112175), (275, 103201), (385, 73715), (575, 49357), (641, 44275), (805, 35255), (1265, 22435), (1771, 16025), (1925, 14743), (3205, 8855), (4025, 7051), (4487, 6325)]