21644025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 39164160

約数和(自身を除く): 17520135

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 79, 195, 237, 281, 325, 395, 843, 975, 1027, 1185, 1405, 1975, 3081, 3653, 4215, 5135, 5925, 7025, 10959, 15405, 18265, 21075, 22199, 25675, 54795, 66597, 77025, 91325, 110995, 273975, 288587, 332985, 554975, 865761, 1442935, 1664925, 4328805, 7214675, 21644025]

約数ペア:

[(1, 21644025), (3, 7214675), (5, 4328805), (13, 1664925), (15, 1442935), (25, 865761), (39, 554975), (65, 332985), (75, 288587), (79, 273975), (195, 110995), (237, 91325), (281, 77025), (325, 66597), (395, 54795), (843, 25675), (975, 22199), (1027, 21075), (1185, 18265), (1405, 15405), (1975, 10959), (3081, 7025), (3653, 5925), (4215, 5135)]