77721920

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2729}}^1$

素因数の和:2835

約数の個数: 56

約数和(自身を含む): 187223400

約数和(自身を除く): 109501480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 712, 890, 1424, 1780, 2729, 2848, 3560, 5458, 5696, 7120, 10916, 13645, 14240, 21832, 27290, 28480, 43664, 54580, 87328, 109160, 174656, 218320, 242881, 436640, 485762, 873280, 971524, 1214405, 1943048, 2428810, 3886096, 4857620, 7772192, 9715240, 15544384, 19430480, 38860960, 77721920]

約数ペア:

[(1, 77721920), (2, 38860960), (4, 19430480), (5, 15544384), (8, 9715240), (10, 7772192), (16, 4857620), (20, 3886096), (32, 2428810), (40, 1943048), (64, 1214405), (80, 971524), (89, 873280), (160, 485762), (178, 436640), (320, 242881), (356, 218320), (445, 174656), (712, 109160), (890, 87328), (1424, 54580), (1780, 43664), (2729, 28480), (2848, 27290), (3560, 21832), (5458, 14240), (5696, 13645), (7120, 10916)]