18408975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 33331200

約数和(自身を除く): 14922225

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 79, 195, 237, 239, 325, 395, 717, 975, 1027, 1185, 1195, 1975, 3081, 3107, 3585, 5135, 5925, 5975, 9321, 15405, 15535, 17925, 18881, 25675, 46605, 56643, 77025, 77675, 94405, 233025, 245453, 283215, 472025, 736359, 1227265, 1416075, 3681795, 6136325, 18408975]

約数ペア:

[(1, 18408975), (3, 6136325), (5, 3681795), (13, 1416075), (15, 1227265), (25, 736359), (39, 472025), (65, 283215), (75, 245453), (79, 233025), (195, 94405), (237, 77675), (239, 77025), (325, 56643), (395, 46605), (717, 25675), (975, 18881), (1027, 17925), (1185, 15535), (1195, 15405), (1975, 9321), (3081, 5975), (3107, 5925), (3585, 5135)]