247213515

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1\times {\mathrm{911}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 402739200

約数和(自身を除く): 155525685

約数列:

[1, 3, 5, 15, 79, 229, 237, 395, 687, 911, 1145, 1185, 2733, 3435, 4555, 13665, 18091, 54273, 71969, 90455, 208619, 215907, 271365, 359845, 625857, 1043095, 1079535, 3129285, 16480901, 49442703, 82404505, 247213515]

約数ペア:

[(1, 247213515), (3, 82404505), (5, 49442703), (15, 16480901), (79, 3129285), (229, 1079535), (237, 1043095), (395, 625857), (687, 359845), (911, 271365), (1145, 215907), (1185, 208619), (2733, 90455), (3435, 71969), (4555, 54273), (13665, 18091)]