397448960

素因数分解:

$2^8\times 5^1\times {\mathrm{310507}}^1$

素因数の和:310528

約数の個数: 36

約数和(自身を含む): 952017528

約数和(自身を除く): 554568568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 310507, 621014, 1242028, 1552535, 2484056, 3105070, 4968112, 6210140, 9936224, 12420280, 19872448, 24840560, 39744896, 49681120, 79489792, 99362240, 198724480, 397448960]

約数ペア:

[(1, 397448960), (2, 198724480), (4, 99362240), (5, 79489792), (8, 49681120), (10, 39744896), (16, 24840560), (20, 19872448), (32, 12420280), (40, 9936224), (64, 6210140), (80, 4968112), (128, 3105070), (160, 2484056), (256, 1552535), (320, 1242028), (640, 621014), (1280, 310507)]