25217720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1549}}^1$

素因数の和:1608

約数の個数: 64

約数和(自身を含む): 63612000

約数和(自身を除く): 38394280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1480, 1549, 1628, 2035, 3098, 3256, 4070, 6196, 7745, 8140, 12392, 15490, 16280, 17039, 30980, 34078, 57313, 61960, 68156, 85195, 114626, 136312, 170390, 229252, 286565, 340780, 458504, 573130, 630443, 681560, 1146260, 1260886, 2292520, 2521772, 3152215, 5043544, 6304430, 12608860, 25217720]

約数ペア:

[(1, 25217720), (2, 12608860), (4, 6304430), (5, 5043544), (8, 3152215), (10, 2521772), (11, 2292520), (20, 1260886), (22, 1146260), (37, 681560), (40, 630443), (44, 573130), (55, 458504), (74, 340780), (88, 286565), (110, 229252), (148, 170390), (185, 136312), (220, 114626), (296, 85195), (370, 68156), (407, 61960), (440, 57313), (740, 34078), (814, 30980), (1480, 17039), (1549, 16280), (1628, 15490), (2035, 12392), (3098, 8140), (3256, 7745), (4070, 6196)]