21243250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 46425600

約数和(自身を除く): 25182350

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 61, 70, 122, 125, 175, 199, 250, 305, 350, 398, 427, 610, 854, 875, 995, 1393, 1525, 1750, 1990, 2135, 2786, 3050, 4270, 4975, 6965, 7625, 9950, 10675, 12139, 13930, 15250, 21350, 24278, 24875, 34825, 49750, 53375, 60695, 69650, 84973, 106750, 121390, 169946, 174125, 303475, 348250, 424865, 606950, 849730, 1517375, 2124325, 3034750, 4248650, 10621625, 21243250]

約数ペア:

[(1, 21243250), (2, 10621625), (5, 4248650), (7, 3034750), (10, 2124325), (14, 1517375), (25, 849730), (35, 606950), (50, 424865), (61, 348250), (70, 303475), (122, 174125), (125, 169946), (175, 121390), (199, 106750), (250, 84973), (305, 69650), (350, 60695), (398, 53375), (427, 49750), (610, 34825), (854, 24875), (875, 24278), (995, 21350), (1393, 15250), (1525, 13930), (1750, 12139), (1990, 10675), (2135, 9950), (2786, 7625), (3050, 6965), (4270, 4975)]