19590025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 30553600

約数和(自身を除く): 10963575

約数列:

[1, 5, 7, 13, 25, 35, 65, 79, 91, 109, 175, 325, 395, 455, 545, 553, 763, 1027, 1417, 1975, 2275, 2725, 2765, 3815, 5135, 7085, 7189, 8611, 9919, 13825, 19075, 25675, 35425, 35945, 43055, 49595, 60277, 111943, 179725, 215275, 247975, 301385, 559715, 783601, 1506925, 2798575, 3918005, 19590025]

約数ペア:

[(1, 19590025), (5, 3918005), (7, 2798575), (13, 1506925), (25, 783601), (35, 559715), (65, 301385), (79, 247975), (91, 215275), (109, 179725), (175, 111943), (325, 60277), (395, 49595), (455, 43055), (545, 35945), (553, 35425), (763, 25675), (1027, 19075), (1417, 13825), (1975, 9919), (2275, 8611), (2725, 7189), (2765, 7085), (3815, 5135)]