21032836

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20879804

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 89, 131, 164, 178, 262, 356, 451, 524, 902, 979, 1441, 1804, 1958, 2882, 3649, 3916, 5371, 5764, 7298, 10742, 11659, 14596, 21484, 23318, 40139, 46636, 59081, 80278, 118162, 128249, 160556, 236324, 256498, 478019, 512996, 956038, 1912076, 5258209, 10516418, 21032836]

約数ペア:

[(1, 21032836), (2, 10516418), (4, 5258209), (11, 1912076), (22, 956038), (41, 512996), (44, 478019), (82, 256498), (89, 236324), (131, 160556), (164, 128249), (178, 118162), (262, 80278), (356, 59081), (451, 46636), (524, 40139), (902, 23318), (979, 21484), (1441, 14596), (1804, 11659), (1958, 10742), (2882, 7298), (3649, 5764), (3916, 5371)]