25214720

素因数分解:

$2^8\times 5^1\times {\mathrm{19699}}^1$

素因数の和:19720

約数の個数: 36

約数和(自身を含む): 60400200

約数和(自身を除く): 35185480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 19699, 39398, 78796, 98495, 157592, 196990, 315184, 393980, 630368, 787960, 1260736, 1575920, 2521472, 3151840, 5042944, 6303680, 12607360, 25214720]

約数ペア:

[(1, 25214720), (2, 12607360), (4, 6303680), (5, 5042944), (8, 3151840), (10, 2521472), (16, 1575920), (20, 1260736), (32, 787960), (40, 630368), (64, 393980), (80, 315184), (128, 196990), (160, 157592), (256, 98495), (320, 78796), (640, 39398), (1280, 19699)]