645005340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{511909}}^1$

素因数の和:511931

約数の個数: 72

約数和(自身を含む): 2236022880

約数和(自身を除く): 1591017540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 511909, 1023818, 1535727, 2047636, 2559545, 3071454, 3583363, 4607181, 5119090, 6142908, 7166726, 7678635, 9214362, 10238180, 10750089, 14333452, 15357270, 17916815, 18428724, 21500178, 23035905, 30714540, 32250267, 35833630, 43000356, 46071810, 53750445, 64500534, 71667260, 92143620, 107500890, 129001068, 161251335, 215001780, 322502670, 645005340]

約数ペア:

[(1, 645005340), (2, 322502670), (3, 215001780), (4, 161251335), (5, 129001068), (6, 107500890), (7, 92143620), (9, 71667260), (10, 64500534), (12, 53750445), (14, 46071810), (15, 43000356), (18, 35833630), (20, 32250267), (21, 30714540), (28, 23035905), (30, 21500178), (35, 18428724), (36, 17916815), (42, 15357270), (45, 14333452), (60, 10750089), (63, 10238180), (70, 9214362), (84, 7678635), (90, 7166726), (105, 6142908), (126, 5119090), (140, 4607181), (180, 3583363), (210, 3071454), (252, 2559545), (315, 2047636), (420, 1535727), (630, 1023818), (1260, 511909)]