320778880

素因数分解:

$2^7\times 5^1\times {\mathrm{501217}}^1$

素因数の和:501236

約数の個数: 32

約数和(自身を含む): 766863540

約数和(自身を除く): 446084660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 501217, 1002434, 2004868, 2506085, 4009736, 5012170, 8019472, 10024340, 16038944, 20048680, 32077888, 40097360, 64155776, 80194720, 160389440, 320778880]

約数ペア:

[(1, 320778880), (2, 160389440), (4, 80194720), (5, 64155776), (8, 40097360), (10, 32077888), (16, 20048680), (20, 16038944), (32, 10024340), (40, 8019472), (64, 5012170), (80, 4009736), (128, 2506085), (160, 2004868), (320, 1002434), (640, 501217)]