78721400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{12697}}^1$

素因数の和:12744

約数の個数: 48

約数和(自身を含む): 188946240

約数和(自身を除く): 110224840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 6200, 12697, 25394, 50788, 63485, 101576, 126970, 253940, 317425, 393607, 507880, 634850, 787214, 1269700, 1574428, 1968035, 2539400, 3148856, 3936070, 7872140, 9840175, 15744280, 19680350, 39360700, 78721400]

約数ペア:

[(1, 78721400), (2, 39360700), (4, 19680350), (5, 15744280), (8, 9840175), (10, 7872140), (20, 3936070), (25, 3148856), (31, 2539400), (40, 1968035), (50, 1574428), (62, 1269700), (100, 787214), (124, 634850), (155, 507880), (200, 393607), (248, 317425), (310, 253940), (620, 126970), (775, 101576), (1240, 63485), (1550, 50788), (3100, 25394), (6200, 12697)]