128423120

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{181}}^2$

素因数の和:389

約数の個数: 90

約数和(自身を含む): 349261686

約数和(自身を除く): 220838566

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 181, 196, 245, 280, 362, 392, 490, 560, 724, 784, 905, 980, 1267, 1448, 1810, 1960, 2534, 2896, 3620, 3920, 5068, 6335, 7240, 8869, 10136, 12670, 14480, 17738, 20272, 25340, 32761, 35476, 44345, 50680, 65522, 70952, 88690, 101360, 131044, 141904, 163805, 177380, 229327, 262088, 327610, 354760, 458654, 524176, 655220, 709520, 917308, 1146635, 1310440, 1605289, 1834616, 2293270, 2620880, 3210578, 3669232, 4586540, 6421156, 8026445, 9173080, 12842312, 16052890, 18346160, 25684624, 32105780, 64211560, 128423120]

約数ペア:

[(1, 128423120), (2, 64211560), (4, 32105780), (5, 25684624), (7, 18346160), (8, 16052890), (10, 12842312), (14, 9173080), (16, 8026445), (20, 6421156), (28, 4586540), (35, 3669232), (40, 3210578), (49, 2620880), (56, 2293270), (70, 1834616), (80, 1605289), (98, 1310440), (112, 1146635), (140, 917308), (181, 709520), (196, 655220), (245, 524176), (280, 458654), (362, 354760), (392, 327610), (490, 262088), (560, 229327), (724, 177380), (784, 163805), (905, 141904), (980, 131044), (1267, 101360), (1448, 88690), (1810, 70952), (1960, 65522), (2534, 50680), (2896, 44345), (3620, 35476), (3920, 32761), (5068, 25340), (6335, 20272), (7240, 17738), (8869, 14480), (10136, 12670)]