39640000

素因数分解:

$2^6\times 5^4\times {\mathrm{991}}^1$

素因数の和:1023

約数の個数: 70

約数和(自身を含む): 98393504

約数和(自身を除く): 58753504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 991, 1000, 1250, 1600, 1982, 2000, 2500, 3964, 4000, 4955, 5000, 7928, 8000, 9910, 10000, 15856, 19820, 20000, 24775, 31712, 39640, 40000, 49550, 63424, 79280, 99100, 123875, 158560, 198200, 247750, 317120, 396400, 495500, 619375, 792800, 991000, 1238750, 1585600, 1982000, 2477500, 3964000, 4955000, 7928000, 9910000, 19820000, 39640000]

約数ペア:

[(1, 39640000), (2, 19820000), (4, 9910000), (5, 7928000), (8, 4955000), (10, 3964000), (16, 2477500), (20, 1982000), (25, 1585600), (32, 1238750), (40, 991000), (50, 792800), (64, 619375), (80, 495500), (100, 396400), (125, 317120), (160, 247750), (200, 198200), (250, 158560), (320, 123875), (400, 99100), (500, 79280), (625, 63424), (800, 49550), (991, 40000), (1000, 39640), (1250, 31712), (1600, 24775), (1982, 20000), (2000, 19820), (2500, 15856), (3964, 10000), (4000, 9910), (4955, 8000), (5000, 7928)]