201251720

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{51869}}^1$

素因数の和:51977

約数の個数: 32

約数和(自身を含む): 457493400

約数和(自身を除く): 256241680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 51869, 103738, 207476, 259345, 414952, 518690, 1037380, 2074760, 5031293, 10062586, 20125172, 25156465, 40250344, 50312930, 100625860, 201251720]

約数ペア:

[(1, 201251720), (2, 100625860), (4, 50312930), (5, 40250344), (8, 25156465), (10, 20125172), (20, 10062586), (40, 5031293), (97, 2074760), (194, 1037380), (388, 518690), (485, 414952), (776, 259345), (970, 207476), (1940, 103738), (3880, 51869)]