20945210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 45045504

約数和(自身を除く): 24100294

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 97, 110, 130, 143, 151, 194, 286, 302, 485, 715, 755, 970, 1067, 1261, 1430, 1510, 1661, 1963, 2134, 2522, 3322, 3926, 5335, 6305, 8305, 9815, 10670, 12610, 13871, 14647, 16610, 19630, 21593, 27742, 29294, 43186, 69355, 73235, 107965, 138710, 146470, 161117, 190411, 215930, 322234, 380822, 805585, 952055, 1611170, 1904110, 2094521, 4189042, 10472605, 20945210]

約数ペア:

[(1, 20945210), (2, 10472605), (5, 4189042), (10, 2094521), (11, 1904110), (13, 1611170), (22, 952055), (26, 805585), (55, 380822), (65, 322234), (97, 215930), (110, 190411), (130, 161117), (143, 146470), (151, 138710), (194, 107965), (286, 73235), (302, 69355), (485, 43186), (715, 29294), (755, 27742), (970, 21593), (1067, 19630), (1261, 16610), (1430, 14647), (1510, 13871), (1661, 12610), (1963, 10670), (2134, 9815), (2522, 8305), (3322, 6305), (3926, 5335)]