256400300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1553}}^1$

素因数の和:1707

約数の個数: 72

約数和(自身を含む): 604294656

約数和(自身を除く): 347894356

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 127, 130, 254, 260, 325, 508, 635, 650, 1270, 1300, 1553, 1651, 2540, 3106, 3175, 3302, 6212, 6350, 6604, 7765, 8255, 12700, 15530, 16510, 20189, 31060, 33020, 38825, 40378, 41275, 77650, 80756, 82550, 100945, 155300, 165100, 197231, 201890, 394462, 403780, 504725, 788924, 986155, 1009450, 1972310, 2018900, 2564003, 3944620, 4930775, 5128006, 9861550, 10256012, 12820015, 19723100, 25640030, 51280060, 64100075, 128200150, 256400300]

約数ペア:

[(1, 256400300), (2, 128200150), (4, 64100075), (5, 51280060), (10, 25640030), (13, 19723100), (20, 12820015), (25, 10256012), (26, 9861550), (50, 5128006), (52, 4930775), (65, 3944620), (100, 2564003), (127, 2018900), (130, 1972310), (254, 1009450), (260, 986155), (325, 788924), (508, 504725), (635, 403780), (650, 394462), (1270, 201890), (1300, 197231), (1553, 165100), (1651, 155300), (2540, 100945), (3106, 82550), (3175, 80756), (3302, 77650), (6212, 41275), (6350, 40378), (6604, 38825), (7765, 33020), (8255, 31060), (12700, 20189), (15530, 16510)]