813144880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{327881}}^1$

素因数の和:327925

約数の個数: 40

約数和(自身を含む): 1951553664

約数和(自身を除く): 1138408784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 327881, 655762, 1311524, 1639405, 2623048, 3278810, 5246096, 6557620, 10164311, 13115240, 20328622, 26230480, 40657244, 50821555, 81314488, 101643110, 162628976, 203286220, 406572440, 813144880]

約数ペア:

[(1, 813144880), (2, 406572440), (4, 203286220), (5, 162628976), (8, 101643110), (10, 81314488), (16, 50821555), (20, 40657244), (31, 26230480), (40, 20328622), (62, 13115240), (80, 10164311), (124, 6557620), (155, 5246096), (248, 3278810), (310, 2623048), (496, 1639405), (620, 1311524), (1240, 655762), (2480, 327881)]