161719340

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 344736000

約数和(自身を除く): 183016660

約数列:

[1, 2, 4, 5, 10, 20, 179, 199, 227, 358, 398, 454, 716, 796, 895, 908, 995, 1135, 1790, 1990, 2270, 3580, 3980, 4540, 35621, 40633, 45173, 71242, 81266, 90346, 142484, 162532, 178105, 180692, 203165, 225865, 356210, 406330, 451730, 712420, 812660, 903460, 8085967, 16171934, 32343868, 40429835, 80859670, 161719340]

約数ペア:

[(1, 161719340), (2, 80859670), (4, 40429835), (5, 32343868), (10, 16171934), (20, 8085967), (179, 903460), (199, 812660), (227, 712420), (358, 451730), (398, 406330), (454, 356210), (716, 225865), (796, 203165), (895, 180692), (908, 178105), (995, 162532), (1135, 142484), (1790, 90346), (1990, 81266), (2270, 71242), (3580, 45173), (3980, 40633), (4540, 35621)]