21638862

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{863}}^1$

素因数の和:1077

約数の個数: 48

約数和(自身を含む): 53913600

約数和(自身を除く): 32274738

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 199, 398, 597, 863, 1194, 1393, 1726, 1791, 2589, 2786, 3582, 4179, 5178, 6041, 7767, 8358, 12082, 12537, 15534, 18123, 25074, 36246, 54369, 108738, 171737, 343474, 515211, 1030422, 1202159, 1545633, 2404318, 3091266, 3606477, 7212954, 10819431, 21638862]

約数ペア:

[(1, 21638862), (2, 10819431), (3, 7212954), (6, 3606477), (7, 3091266), (9, 2404318), (14, 1545633), (18, 1202159), (21, 1030422), (42, 515211), (63, 343474), (126, 171737), (199, 108738), (398, 54369), (597, 36246), (863, 25074), (1194, 18123), (1393, 15534), (1726, 12537), (1791, 12082), (2589, 8358), (2786, 7767), (3582, 6041), (4179, 5178)]