21477800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{6317}}^1$

素因数の和:6350

約数の個数: 48

約数和(自身を含む): 52881660

約数和(自身を除く): 31403860

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 340, 425, 680, 850, 1700, 3400, 6317, 12634, 25268, 31585, 50536, 63170, 107389, 126340, 157925, 214778, 252680, 315850, 429556, 536945, 631700, 859112, 1073890, 1263400, 2147780, 2684725, 4295560, 5369450, 10738900, 21477800]

約数ペア:

[(1, 21477800), (2, 10738900), (4, 5369450), (5, 4295560), (8, 2684725), (10, 2147780), (17, 1263400), (20, 1073890), (25, 859112), (34, 631700), (40, 536945), (50, 429556), (68, 315850), (85, 252680), (100, 214778), (136, 157925), (170, 126340), (200, 107389), (340, 63170), (425, 50536), (680, 31585), (850, 25268), (1700, 12634), (3400, 6317)]