78701440

素因数分解:

$2^7\times 5^1\times {\mathrm{122971}}^1$

素因数の和:122990

約数の個数: 32

約数和(自身を含む): 188147160

約数和(自身を除く): 109445720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122971, 245942, 491884, 614855, 983768, 1229710, 1967536, 2459420, 3935072, 4918840, 7870144, 9837680, 15740288, 19675360, 39350720, 78701440]

約数ペア:

[(1, 78701440), (2, 39350720), (4, 19675360), (5, 15740288), (8, 9837680), (10, 7870144), (16, 4918840), (20, 3935072), (32, 2459420), (40, 1967536), (64, 1229710), (80, 983768), (128, 614855), (160, 491884), (320, 245942), (640, 122971)]