19691000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 128

約数和(自身を含む): 55036800

約数和(自身を除く): 35345800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 29, 35, 40, 50, 56, 58, 70, 97, 100, 116, 125, 140, 145, 175, 194, 200, 203, 232, 250, 280, 290, 350, 388, 406, 485, 500, 580, 679, 700, 725, 776, 812, 875, 970, 1000, 1015, 1160, 1358, 1400, 1450, 1624, 1750, 1940, 2030, 2425, 2716, 2813, 2900, 3395, 3500, 3625, 3880, 4060, 4850, 5075, 5432, 5626, 5800, 6790, 7000, 7250, 8120, 9700, 10150, 11252, 12125, 13580, 14065, 14500, 16975, 19400, 19691, 20300, 22504, 24250, 25375, 27160, 28130, 29000, 33950, 39382, 40600, 48500, 50750, 56260, 67900, 70325, 78764, 84875, 97000, 98455, 101500, 112520, 135800, 140650, 157528, 169750, 196910, 203000, 281300, 339500, 351625, 393820, 492275, 562600, 679000, 703250, 787640, 984550, 1406500, 1969100, 2461375, 2813000, 3938200, 4922750, 9845500, 19691000]

約数ペア:

[(1, 19691000), (2, 9845500), (4, 4922750), (5, 3938200), (7, 2813000), (8, 2461375), (10, 1969100), (14, 1406500), (20, 984550), (25, 787640), (28, 703250), (29, 679000), (35, 562600), (40, 492275), (50, 393820), (56, 351625), (58, 339500), (70, 281300), (97, 203000), (100, 196910), (116, 169750), (125, 157528), (140, 140650), (145, 135800), (175, 112520), (194, 101500), (200, 98455), (203, 97000), (232, 84875), (250, 78764), (280, 70325), (290, 67900), (350, 56260), (388, 50750), (406, 48500), (485, 40600), (500, 39382), (580, 33950), (679, 29000), (700, 28130), (725, 27160), (776, 25375), (812, 24250), (875, 22504), (970, 20300), (1000, 19691), (1015, 19400), (1160, 16975), (1358, 14500), (1400, 14065), (1450, 13580), (1624, 12125), (1750, 11252), (1940, 10150), (2030, 9700), (2425, 8120), (2716, 7250), (2813, 7000), (2900, 6790), (3395, 5800), (3500, 5626), (3625, 5432), (3880, 5075), (4060, 4850)]