28739000

素因数分解:

$2^3\times 5^3\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1041

約数の個数: 64

約数和(自身を含む): 69638400

約数和(自身を除く): 40899400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 125, 145, 200, 232, 250, 290, 500, 580, 725, 991, 1000, 1160, 1450, 1982, 2900, 3625, 3964, 4955, 5800, 7250, 7928, 9910, 14500, 19820, 24775, 28739, 29000, 39640, 49550, 57478, 99100, 114956, 123875, 143695, 198200, 229912, 247750, 287390, 495500, 574780, 718475, 991000, 1149560, 1436950, 2873900, 3592375, 5747800, 7184750, 14369500, 28739000]

約数ペア:

[(1, 28739000), (2, 14369500), (4, 7184750), (5, 5747800), (8, 3592375), (10, 2873900), (20, 1436950), (25, 1149560), (29, 991000), (40, 718475), (50, 574780), (58, 495500), (100, 287390), (116, 247750), (125, 229912), (145, 198200), (200, 143695), (232, 123875), (250, 114956), (290, 99100), (500, 57478), (580, 49550), (725, 39640), (991, 29000), (1000, 28739), (1160, 24775), (1450, 19820), (1982, 14500), (2900, 9910), (3625, 7928), (3964, 7250), (4955, 5800)]