12780880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{787}}^1$

素因数の和:836

約数の個数: 80

約数和(自身を含む): 35176320

約数和(自身を除く): 22395440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 787, 812, 1015, 1160, 1574, 1624, 2030, 2320, 3148, 3248, 3935, 4060, 5509, 6296, 7870, 8120, 11018, 12592, 15740, 16240, 22036, 22823, 27545, 31480, 44072, 45646, 55090, 62960, 88144, 91292, 110180, 114115, 159761, 182584, 220360, 228230, 319522, 365168, 440720, 456460, 639044, 798805, 912920, 1278088, 1597610, 1825840, 2556176, 3195220, 6390440, 12780880]

約数ペア:

[(1, 12780880), (2, 6390440), (4, 3195220), (5, 2556176), (7, 1825840), (8, 1597610), (10, 1278088), (14, 912920), (16, 798805), (20, 639044), (28, 456460), (29, 440720), (35, 365168), (40, 319522), (56, 228230), (58, 220360), (70, 182584), (80, 159761), (112, 114115), (116, 110180), (140, 91292), (145, 88144), (203, 62960), (232, 55090), (280, 45646), (290, 44072), (406, 31480), (464, 27545), (560, 22823), (580, 22036), (787, 16240), (812, 15740), (1015, 12592), (1160, 11018), (1574, 8120), (1624, 7870), (2030, 6296), (2320, 5509), (3148, 4060), (3248, 3935)]