278716750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{449}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 566092800

約数和(自身を除く): 287376050

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 191, 250, 325, 382, 449, 650, 898, 955, 1625, 1910, 2245, 2483, 3250, 4490, 4775, 4966, 5837, 9550, 11225, 11674, 12415, 22450, 23875, 24830, 29185, 47750, 56125, 58370, 62075, 85759, 112250, 124150, 145925, 171518, 291850, 310375, 428795, 620750, 729625, 857590, 1114867, 1459250, 2143975, 2229734, 4287950, 5574335, 10719875, 11148670, 21439750, 27871675, 55743350, 139358375, 278716750]

約数ペア:

[(1, 278716750), (2, 139358375), (5, 55743350), (10, 27871675), (13, 21439750), (25, 11148670), (26, 10719875), (50, 5574335), (65, 4287950), (125, 2229734), (130, 2143975), (191, 1459250), (250, 1114867), (325, 857590), (382, 729625), (449, 620750), (650, 428795), (898, 310375), (955, 291850), (1625, 171518), (1910, 145925), (2245, 124150), (2483, 112250), (3250, 85759), (4490, 62075), (4775, 58370), (4966, 56125), (5837, 47750), (9550, 29185), (11225, 24830), (11674, 23875), (12415, 22450)]