20675109

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 35750400

約数和(自身を除く): 15075291

約数列:

[1, 3, 7, 13, 21, 31, 39, 49, 91, 93, 147, 217, 273, 349, 403, 637, 651, 1047, 1209, 1519, 1911, 2443, 2821, 4537, 4557, 7329, 8463, 10819, 13611, 17101, 19747, 31759, 32457, 51303, 59241, 75733, 95277, 140647, 222313, 227199, 421941, 530131, 666939, 984529, 1590393, 2953587, 6891703, 20675109]

約数ペア:

[(1, 20675109), (3, 6891703), (7, 2953587), (13, 1590393), (21, 984529), (31, 666939), (39, 530131), (49, 421941), (91, 227199), (93, 222313), (147, 140647), (217, 95277), (273, 75733), (349, 59241), (403, 51303), (637, 32457), (651, 31759), (1047, 19747), (1209, 17101), (1519, 13611), (1911, 10819), (2443, 8463), (2821, 7329), (4537, 4557)]