19910280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12763}}^1$

素因数の和:12790

約数の個数: 64

約数和(自身を含む): 64330560

約数和(自身を除く): 44420280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12763, 25526, 38289, 51052, 63815, 76578, 102104, 127630, 153156, 165919, 191445, 255260, 306312, 331838, 382890, 497757, 510520, 663676, 765780, 829595, 995514, 1327352, 1531560, 1659190, 1991028, 2488785, 3318380, 3982056, 4977570, 6636760, 9955140, 19910280]

約数ペア:

[(1, 19910280), (2, 9955140), (3, 6636760), (4, 4977570), (5, 3982056), (6, 3318380), (8, 2488785), (10, 1991028), (12, 1659190), (13, 1531560), (15, 1327352), (20, 995514), (24, 829595), (26, 765780), (30, 663676), (39, 510520), (40, 497757), (52, 382890), (60, 331838), (65, 306312), (78, 255260), (104, 191445), (120, 165919), (130, 153156), (156, 127630), (195, 102104), (260, 76578), (312, 63815), (390, 51052), (520, 38289), (780, 25526), (1560, 12763)]