20291259520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{50891}}^1$

素因数の和:51006

約数の個数: 128

約数和(自身を含む): 56062627200

約数和(自身を除く): 35771367680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 89, 112, 128, 140, 160, 178, 224, 280, 320, 356, 445, 448, 560, 623, 640, 712, 890, 896, 1120, 1246, 1424, 1780, 2240, 2492, 2848, 3115, 3560, 4480, 4984, 5696, 6230, 7120, 9968, 11392, 12460, 14240, 19936, 24920, 28480, 39872, 49840, 50891, 56960, 79744, 99680, 101782, 199360, 203564, 254455, 356237, 398720, 407128, 508910, 712474, 814256, 1017820, 1424948, 1628512, 1781185, 2035640, 2849896, 3257024, 3562370, 4071280, 4529299, 5699792, 6514048, 7124740, 8142560, 9058598, 11399584, 14249480, 16285120, 18117196, 22646495, 22799168, 28498960, 31705093, 32570240, 36234392, 45292990, 45598336, 56997920, 63410186, 72468784, 90585980, 113995840, 126820372, 144937568, 158525465, 181171960, 227991680, 253640744, 289875136, 317050930, 362343920, 507281488, 579750272, 634101860, 724687840, 1014562976, 1268203720, 1449375680, 2029125952, 2536407440, 2898751360, 4058251904, 5072814880, 10145629760, 20291259520]

約数ペア:

[(1, 20291259520), (2, 10145629760), (4, 5072814880), (5, 4058251904), (7, 2898751360), (8, 2536407440), (10, 2029125952), (14, 1449375680), (16, 1268203720), (20, 1014562976), (28, 724687840), (32, 634101860), (35, 579750272), (40, 507281488), (56, 362343920), (64, 317050930), (70, 289875136), (80, 253640744), (89, 227991680), (112, 181171960), (128, 158525465), (140, 144937568), (160, 126820372), (178, 113995840), (224, 90585980), (280, 72468784), (320, 63410186), (356, 56997920), (445, 45598336), (448, 45292990), (560, 36234392), (623, 32570240), (640, 31705093), (712, 28498960), (890, 22799168), (896, 22646495), (1120, 18117196), (1246, 16285120), (1424, 14249480), (1780, 11399584), (2240, 9058598), (2492, 8142560), (2848, 7124740), (3115, 6514048), (3560, 5699792), (4480, 4529299), (4984, 4071280), (5696, 3562370), (6230, 3257024), (7120, 2849896), (9968, 2035640), (11392, 1781185), (12460, 1628512), (14240, 1424948), (19936, 1017820), (24920, 814256), (28480, 712474), (39872, 508910), (49840, 407128), (50891, 398720), (56960, 356237), (79744, 254455), (99680, 203564), (101782, 199360)]