21730240

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 112

約数和(自身を含む): 60350400

約数和(自身を除く): 38620160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 89, 109, 112, 140, 160, 178, 218, 224, 280, 320, 356, 436, 445, 448, 545, 560, 623, 712, 763, 872, 890, 1090, 1120, 1246, 1424, 1526, 1744, 1780, 2180, 2240, 2492, 2848, 3052, 3115, 3488, 3560, 3815, 4360, 4984, 5696, 6104, 6230, 6976, 7120, 7630, 8720, 9701, 9968, 12208, 12460, 14240, 15260, 17440, 19402, 19936, 24416, 24920, 28480, 30520, 34880, 38804, 39872, 48505, 48832, 49840, 61040, 67907, 77608, 97010, 99680, 122080, 135814, 155216, 194020, 199360, 244160, 271628, 310432, 339535, 388040, 543256, 620864, 679070, 776080, 1086512, 1358140, 1552160, 2173024, 2716280, 3104320, 4346048, 5432560, 10865120, 21730240]

約数ペア:

[(1, 21730240), (2, 10865120), (4, 5432560), (5, 4346048), (7, 3104320), (8, 2716280), (10, 2173024), (14, 1552160), (16, 1358140), (20, 1086512), (28, 776080), (32, 679070), (35, 620864), (40, 543256), (56, 388040), (64, 339535), (70, 310432), (80, 271628), (89, 244160), (109, 199360), (112, 194020), (140, 155216), (160, 135814), (178, 122080), (218, 99680), (224, 97010), (280, 77608), (320, 67907), (356, 61040), (436, 49840), (445, 48832), (448, 48505), (545, 39872), (560, 38804), (623, 34880), (712, 30520), (763, 28480), (872, 24920), (890, 24416), (1090, 19936), (1120, 19402), (1246, 17440), (1424, 15260), (1526, 14240), (1744, 12460), (1780, 12208), (2180, 9968), (2240, 9701), (2492, 8720), (2848, 7630), (3052, 7120), (3115, 6976), (3488, 6230), (3560, 6104), (3815, 5696), (4360, 4984)]