1213900

素因数分解:

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

素因数の和:274

約数の個数: 36

約数和(自身を含む): 2690800

約数和(自身を除く): 1476900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 199, 244, 305, 398, 610, 796, 995, 1220, 1525, 1990, 3050, 3980, 4975, 6100, 9950, 12139, 19900, 24278, 48556, 60695, 121390, 242780, 303475, 606950, 1213900]

約数ペア:

[(1, 1213900), (2, 606950), (4, 303475), (5, 242780), (10, 121390), (20, 60695), (25, 48556), (50, 24278), (61, 19900), (100, 12139), (122, 9950), (199, 6100), (244, 4975), (305, 3980), (398, 3050), (610, 1990), (796, 1525), (995, 1220)]