1388404760

素因数分解:

$2^3\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{24121}}^1$

素因数の和:25571

約数の個数: 32

約数和(自身を含む): 3126211200

約数和(自身を除く): 1737806440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1439, 2878, 5756, 7195, 11512, 14390, 24121, 28780, 48242, 57560, 96484, 120605, 192968, 241210, 482420, 964840, 34710119, 69420238, 138840476, 173550595, 277680952, 347101190, 694202380, 1388404760]

約数ペア:

[(1, 1388404760), (2, 694202380), (4, 347101190), (5, 277680952), (8, 173550595), (10, 138840476), (20, 69420238), (40, 34710119), (1439, 964840), (2878, 482420), (5756, 241210), (7195, 192968), (11512, 120605), (14390, 96484), (24121, 57560), (28780, 48242)]