20736204560

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{661}}^1\times {\mathrm{1447}}^1$

素因数の和:2392

約数の個数: 80

約数和(自身を含む): 48496276992

約数和(自身を除く): 27760072432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 661, 1084, 1322, 1355, 1447, 2168, 2644, 2710, 2894, 3305, 4336, 5288, 5420, 5788, 6610, 7235, 10576, 10840, 11576, 13220, 14470, 21680, 23152, 26440, 28940, 52880, 57880, 115760, 179131, 358262, 392137, 716524, 784274, 895655, 956467, 1433048, 1568548, 1791310, 1912934, 1960685, 2866096, 3137096, 3582620, 3825868, 3921370, 4782335, 6274192, 7165240, 7651736, 7842740, 9564670, 14330480, 15303472, 15685480, 19129340, 31370960, 38258680, 76517360, 259202557, 518405114, 1036810228, 1296012785, 2073620456, 2592025570, 4147240912, 5184051140, 10368102280, 20736204560]

約数ペア:

[(1, 20736204560), (2, 10368102280), (4, 5184051140), (5, 4147240912), (8, 2592025570), (10, 2073620456), (16, 1296012785), (20, 1036810228), (40, 518405114), (80, 259202557), (271, 76517360), (542, 38258680), (661, 31370960), (1084, 19129340), (1322, 15685480), (1355, 15303472), (1447, 14330480), (2168, 9564670), (2644, 7842740), (2710, 7651736), (2894, 7165240), (3305, 6274192), (4336, 4782335), (5288, 3921370), (5420, 3825868), (5788, 3582620), (6610, 3137096), (7235, 2866096), (10576, 1960685), (10840, 1912934), (11576, 1791310), (13220, 1568548), (14470, 1433048), (21680, 956467), (23152, 895655), (26440, 784274), (28940, 716524), (52880, 392137), (57880, 358262), (115760, 179131)]