20790403900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{153889}}^1$

素因数の和:154103

約数の個数: 72

約数和(自身を含む): 51827689760

約数和(自身を除く): 31037285860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 193, 350, 386, 700, 772, 965, 1351, 1930, 2702, 3860, 4825, 5404, 6755, 9650, 13510, 19300, 27020, 33775, 67550, 135100, 153889, 307778, 615556, 769445, 1077223, 1538890, 2154446, 3077780, 3847225, 4308892, 5386115, 7694450, 10772230, 15388900, 21544460, 26930575, 29700577, 53861150, 59401154, 107722300, 118802308, 148502885, 207904039, 297005770, 415808078, 594011540, 742514425, 831616156, 1039520195, 1485028850, 2079040390, 2970057700, 4158080780, 5197600975, 10395201950, 20790403900]

約数ペア:

[(1, 20790403900), (2, 10395201950), (4, 5197600975), (5, 4158080780), (7, 2970057700), (10, 2079040390), (14, 1485028850), (20, 1039520195), (25, 831616156), (28, 742514425), (35, 594011540), (50, 415808078), (70, 297005770), (100, 207904039), (140, 148502885), (175, 118802308), (193, 107722300), (350, 59401154), (386, 53861150), (700, 29700577), (772, 26930575), (965, 21544460), (1351, 15388900), (1930, 10772230), (2702, 7694450), (3860, 5386115), (4825, 4308892), (5404, 3847225), (6755, 3077780), (9650, 2154446), (13510, 1538890), (19300, 1077223), (27020, 769445), (33775, 615556), (67550, 307778), (135100, 153889)]