19521220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16001}}^1$

素因数の和:16071

約数の個数: 24

約数和(自身を含む): 41669208

約数和(自身を除く): 22147988

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16001, 32002, 64004, 80005, 160010, 320020, 976061, 1952122, 3904244, 4880305, 9760610, 19521220]

約数ペア:

[(1, 19521220), (2, 9760610), (4, 4880305), (5, 3904244), (10, 1952122), (20, 976061), (61, 320020), (122, 160010), (244, 80005), (305, 64004), (610, 32002), (1220, 16001)]