638528070

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{21521}}^1$

素因数の和:21597

約数の個数: 64

約数和(自身を含む): 1636360704

約数和(自身を除く): 997832634

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 43, 46, 69, 86, 115, 129, 138, 215, 230, 258, 345, 430, 645, 690, 989, 1290, 1978, 2967, 4945, 5934, 9890, 14835, 21521, 29670, 43042, 64563, 107605, 129126, 215210, 322815, 494983, 645630, 925403, 989966, 1484949, 1850806, 2474915, 2776209, 2969898, 4627015, 4949830, 5552418, 7424745, 9254030, 13881045, 14849490, 21284269, 27762090, 42568538, 63852807, 106421345, 127705614, 212842690, 319264035, 638528070]

約数ペア:

[(1, 638528070), (2, 319264035), (3, 212842690), (5, 127705614), (6, 106421345), (10, 63852807), (15, 42568538), (23, 27762090), (30, 21284269), (43, 14849490), (46, 13881045), (69, 9254030), (86, 7424745), (115, 5552418), (129, 4949830), (138, 4627015), (215, 2969898), (230, 2776209), (258, 2474915), (345, 1850806), (430, 1484949), (645, 989966), (690, 925403), (989, 645630), (1290, 494983), (1978, 322815), (2967, 215210), (4945, 129126), (5934, 107605), (9890, 64563), (14835, 43042), (21521, 29670)]