489715480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{298607}}^1$

素因数の和:298659

約数の個数: 32

約数和(自身を含む): 1128738240

約数和(自身を除く): 639022760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 298607, 597214, 1194428, 1493035, 2388856, 2986070, 5972140, 11944280, 12242887, 24485774, 48971548, 61214435, 97943096, 122428870, 244857740, 489715480]

約数ペア:

[(1, 489715480), (2, 244857740), (4, 122428870), (5, 97943096), (8, 61214435), (10, 48971548), (20, 24485774), (40, 12242887), (41, 11944280), (82, 5972140), (164, 2986070), (205, 2388856), (328, 1493035), (410, 1194428), (820, 597214), (1640, 298607)]