398720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{89}}^1$

素因数の和:115

約数の個数: 64

約数和(自身を含む): 1101600

約数和(自身を除く): 702880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 89, 112, 128, 140, 160, 178, 224, 280, 320, 356, 445, 448, 560, 623, 640, 712, 890, 896, 1120, 1246, 1424, 1780, 2240, 2492, 2848, 3115, 3560, 4480, 4984, 5696, 6230, 7120, 9968, 11392, 12460, 14240, 19936, 24920, 28480, 39872, 49840, 56960, 79744, 99680, 199360, 398720]

約数ペア:

[(1, 398720), (2, 199360), (4, 99680), (5, 79744), (7, 56960), (8, 49840), (10, 39872), (14, 28480), (16, 24920), (20, 19936), (28, 14240), (32, 12460), (35, 11392), (40, 9968), (56, 7120), (64, 6230), (70, 5696), (80, 4984), (89, 4480), (112, 3560), (128, 3115), (140, 2848), (160, 2492), (178, 2240), (224, 1780), (280, 1424), (320, 1246), (356, 1120), (445, 896), (448, 890), (560, 712), (623, 640)]