31371417

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 59754240

約数和(自身を除く): 28382823

約数列:

[1, 3, 7, 9, 11, 21, 29, 33, 49, 63, 77, 87, 99, 147, 203, 223, 231, 261, 319, 441, 539, 609, 669, 693, 957, 1421, 1561, 1617, 1827, 2007, 2233, 2453, 2871, 4263, 4683, 4851, 6467, 6699, 7359, 10927, 12789, 14049, 15631, 17171, 19401, 20097, 22077, 32781, 45269, 46893, 51513, 58203, 71137, 98343, 120197, 135807, 140679, 154539, 213411, 316883, 360591, 407421, 497959, 640233, 950649, 1081773, 1493877, 2851947, 3485713, 4481631, 10457139, 31371417]

約数ペア:

[(1, 31371417), (3, 10457139), (7, 4481631), (9, 3485713), (11, 2851947), (21, 1493877), (29, 1081773), (33, 950649), (49, 640233), (63, 497959), (77, 407421), (87, 360591), (99, 316883), (147, 213411), (203, 154539), (223, 140679), (231, 135807), (261, 120197), (319, 98343), (441, 71137), (539, 58203), (609, 51513), (669, 46893), (693, 45269), (957, 32781), (1421, 22077), (1561, 20097), (1617, 19401), (1827, 17171), (2007, 15631), (2233, 14049), (2453, 12789), (2871, 10927), (4263, 7359), (4683, 6699), (4851, 6467)]