20744750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^2\times {\mathrm{491}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 42136848

約数和(自身を除く): 21392098

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 169, 250, 325, 338, 491, 650, 845, 982, 1625, 1690, 2455, 3250, 4225, 4910, 6383, 8450, 12275, 12766, 21125, 24550, 31915, 42250, 61375, 63830, 82979, 122750, 159575, 165958, 319150, 414895, 797875, 829790, 1595750, 2074475, 4148950, 10372375, 20744750]

約数ペア:

[(1, 20744750), (2, 10372375), (5, 4148950), (10, 2074475), (13, 1595750), (25, 829790), (26, 797875), (50, 414895), (65, 319150), (125, 165958), (130, 159575), (169, 122750), (250, 82979), (325, 63830), (338, 61375), (491, 42250), (650, 31915), (845, 24550), (982, 21125), (1625, 12766), (1690, 12275), (2455, 8450), (3250, 6383), (4225, 4910)]