21000969860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{587}}^1\times {\mathrm{3719}}^1$

素因数の和:4365

約数の個数: 96

約数和(自身を含む): 48874371840

約数和(自身を除く): 27873401980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 587, 740, 962, 1174, 1924, 2348, 2405, 2935, 3719, 4810, 5870, 7438, 7631, 9620, 11740, 14876, 15262, 18595, 21719, 30524, 37190, 38155, 43438, 48347, 74380, 76310, 86876, 96694, 108595, 137603, 152620, 193388, 217190, 241735, 275206, 282347, 434380, 483470, 550412, 564694, 688015, 966940, 1129388, 1376030, 1411735, 1788839, 2183053, 2752060, 2823470, 3577678, 4366106, 5646940, 7155356, 8732212, 8944195, 10915265, 17888390, 21830530, 28379689, 35776780, 43661060, 56759378, 80772961, 113518756, 141898445, 161545922, 283796890, 323091844, 403864805, 567593780, 807729610, 1050048493, 1615459220, 2100096986, 4200193972, 5250242465, 10500484930, 21000969860]

約数ペア:

[(1, 21000969860), (2, 10500484930), (4, 5250242465), (5, 4200193972), (10, 2100096986), (13, 1615459220), (20, 1050048493), (26, 807729610), (37, 567593780), (52, 403864805), (65, 323091844), (74, 283796890), (130, 161545922), (148, 141898445), (185, 113518756), (260, 80772961), (370, 56759378), (481, 43661060), (587, 35776780), (740, 28379689), (962, 21830530), (1174, 17888390), (1924, 10915265), (2348, 8944195), (2405, 8732212), (2935, 7155356), (3719, 5646940), (4810, 4366106), (5870, 3577678), (7438, 2823470), (7631, 2752060), (9620, 2183053), (11740, 1788839), (14876, 1411735), (15262, 1376030), (18595, 1129388), (21719, 966940), (30524, 688015), (37190, 564694), (38155, 550412), (43438, 483470), (48347, 434380), (74380, 282347), (76310, 275206), (86876, 241735), (96694, 217190), (108595, 193388), (137603, 152620)]