391798720

素因数分解:

$2^6\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2789}}^1$

素因数の和:3245

約数の個数: 56

約数和(自身を含む): 935431200

約数和(自身を除く): 543632480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 439, 878, 1756, 2195, 2789, 3512, 4390, 5578, 7024, 8780, 11156, 13945, 14048, 17560, 22312, 27890, 28096, 35120, 44624, 55780, 70240, 89248, 111560, 140480, 178496, 223120, 446240, 892480, 1224371, 2448742, 4897484, 6121855, 9794968, 12243710, 19589936, 24487420, 39179872, 48974840, 78359744, 97949680, 195899360, 391798720]

約数ペア:

[(1, 391798720), (2, 195899360), (4, 97949680), (5, 78359744), (8, 48974840), (10, 39179872), (16, 24487420), (20, 19589936), (32, 12243710), (40, 9794968), (64, 6121855), (80, 4897484), (160, 2448742), (320, 1224371), (439, 892480), (878, 446240), (1756, 223120), (2195, 178496), (2789, 140480), (3512, 111560), (4390, 89248), (5578, 70240), (7024, 55780), (8780, 44624), (11156, 35120), (13945, 28096), (14048, 27890), (17560, 22312)]