19691319440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{73673}}^1$

素因数の和:73956

約数の個数: 80

約数和(自身を含む): 49496550768

約数和(自身を除く): 29805231328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 257, 260, 514, 520, 1028, 1040, 1285, 2056, 2570, 3341, 4112, 5140, 6682, 10280, 13364, 16705, 20560, 26728, 33410, 53456, 66820, 73673, 133640, 147346, 267280, 294692, 368365, 589384, 736730, 957749, 1178768, 1473460, 1915498, 2946920, 3830996, 4788745, 5893840, 7661992, 9577490, 15323984, 18933961, 19154980, 37867922, 38309960, 75735844, 76619920, 94669805, 151471688, 189339610, 246141493, 302943376, 378679220, 492282986, 757358440, 984565972, 1230707465, 1514716880, 1969131944, 2461414930, 3938263888, 4922829860, 9845659720, 19691319440]

約数ペア:

[(1, 19691319440), (2, 9845659720), (4, 4922829860), (5, 3938263888), (8, 2461414930), (10, 1969131944), (13, 1514716880), (16, 1230707465), (20, 984565972), (26, 757358440), (40, 492282986), (52, 378679220), (65, 302943376), (80, 246141493), (104, 189339610), (130, 151471688), (208, 94669805), (257, 76619920), (260, 75735844), (514, 38309960), (520, 37867922), (1028, 19154980), (1040, 18933961), (1285, 15323984), (2056, 9577490), (2570, 7661992), (3341, 5893840), (4112, 4788745), (5140, 3830996), (6682, 2946920), (10280, 1915498), (13364, 1473460), (16705, 1178768), (20560, 957749), (26728, 736730), (33410, 589384), (53456, 368365), (66820, 294692), (73673, 267280), (133640, 147346)]