40278980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1787}}^1$

素因数の和:1833

約数の個数: 72

約数和(自身を含む): 102731328

約数和(自身を除く): 62452348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 1787, 2254, 3220, 3574, 4508, 5635, 7148, 8935, 11270, 12509, 17870, 22540, 25018, 35740, 41101, 50036, 62545, 82202, 87563, 125090, 164404, 175126, 205505, 250180, 287707, 350252, 411010, 437815, 575414, 822020, 875630, 1150828, 1438535, 1751260, 2013949, 2877070, 4027898, 5754140, 8055796, 10069745, 20139490, 40278980]

約数ペア:

[(1, 40278980), (2, 20139490), (4, 10069745), (5, 8055796), (7, 5754140), (10, 4027898), (14, 2877070), (20, 2013949), (23, 1751260), (28, 1438535), (35, 1150828), (46, 875630), (49, 822020), (70, 575414), (92, 437815), (98, 411010), (115, 350252), (140, 287707), (161, 250180), (196, 205505), (230, 175126), (245, 164404), (322, 125090), (460, 87563), (490, 82202), (644, 62545), (805, 50036), (980, 41101), (1127, 35740), (1610, 25018), (1787, 22540), (2254, 17870), (3220, 12509), (3574, 11270), (4508, 8935), (5635, 7148)]