19760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:45

約数の個数: 40

約数和(自身を含む): 52080

約数和(自身を除く): 32320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 2470, 3952, 4940, 9880, 19760]

約数ペア:

[(1, 19760), (2, 9880), (4, 4940), (5, 3952), (8, 2470), (10, 1976), (13, 1520), (16, 1235), (19, 1040), (20, 988), (26, 760), (38, 520), (40, 494), (52, 380), (65, 304), (76, 260), (80, 247), (95, 208), (104, 190), (130, 152)]