197476520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{80933}}^1$

素因数の和:81005

約数の個数: 32

約数和(自身を含む): 451611720

約数和(自身を除く): 254135200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 80933, 161866, 323732, 404665, 647464, 809330, 1618660, 3237320, 4936913, 9873826, 19747652, 24684565, 39495304, 49369130, 98738260, 197476520]

約数ペア:

[(1, 197476520), (2, 98738260), (4, 49369130), (5, 39495304), (8, 24684565), (10, 19747652), (20, 9873826), (40, 4936913), (61, 3237320), (122, 1618660), (244, 809330), (305, 647464), (488, 404665), (610, 323732), (1220, 161866), (2440, 80933)]