989440

素因数分解:

$2^8\times 5^1\times {\mathrm{773}}^1$

素因数の和:794

約数の個数: 36

約数和(自身を含む): 2373084

約数和(自身を除く): 1383644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 773, 1280, 1546, 3092, 3865, 6184, 7730, 12368, 15460, 24736, 30920, 49472, 61840, 98944, 123680, 197888, 247360, 494720, 989440]

約数ペア:

[(1, 989440), (2, 494720), (4, 247360), (5, 197888), (8, 123680), (10, 98944), (16, 61840), (20, 49472), (32, 30920), (40, 24736), (64, 15460), (80, 12368), (128, 7730), (160, 6184), (256, 3865), (320, 3092), (640, 1546), (773, 1280)]