19703710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:253

約数の個数: 48

約数和(自身を含む): 39132720

約数和(自身を除く): 19429010

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 131, 169, 178, 262, 338, 445, 655, 845, 890, 1157, 1310, 1690, 1703, 2314, 3406, 5785, 8515, 11570, 11659, 15041, 17030, 22139, 23318, 30082, 44278, 58295, 75205, 110695, 116590, 150410, 151567, 221390, 303134, 757835, 1515670, 1970371, 3940742, 9851855, 19703710]

約数ペア:

[(1, 19703710), (2, 9851855), (5, 3940742), (10, 1970371), (13, 1515670), (26, 757835), (65, 303134), (89, 221390), (130, 151567), (131, 150410), (169, 116590), (178, 110695), (262, 75205), (338, 58295), (445, 44278), (655, 30082), (845, 23318), (890, 22139), (1157, 17030), (1310, 15041), (1690, 11659), (1703, 11570), (2314, 8515), (3406, 5785)]