20720150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{373}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 42573168

約数和(自身を除く): 21853018

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 101, 110, 202, 275, 373, 505, 550, 746, 1010, 1111, 1865, 2222, 2525, 3730, 4103, 5050, 5555, 8206, 9325, 11110, 18650, 20515, 27775, 37673, 41030, 55550, 75346, 102575, 188365, 205150, 376730, 414403, 828806, 941825, 1883650, 2072015, 4144030, 10360075, 20720150]

約数ペア:

[(1, 20720150), (2, 10360075), (5, 4144030), (10, 2072015), (11, 1883650), (22, 941825), (25, 828806), (50, 414403), (55, 376730), (101, 205150), (110, 188365), (202, 102575), (275, 75346), (373, 55550), (505, 41030), (550, 37673), (746, 27775), (1010, 20515), (1111, 18650), (1865, 11110), (2222, 9325), (2525, 8206), (3730, 5555), (4103, 5050)]