20290244

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 40567296

約数和(自身を除く): 20277052

約数列:

[1, 2, 4, 13, 26, 31, 41, 52, 62, 82, 124, 164, 307, 403, 533, 614, 806, 1066, 1228, 1271, 1612, 2132, 2542, 3991, 5084, 7982, 9517, 12587, 15964, 16523, 19034, 25174, 33046, 38068, 50348, 66092, 123721, 163631, 247442, 327262, 390197, 494884, 654524, 780394, 1560788, 5072561, 10145122, 20290244]

約数ペア:

[(1, 20290244), (2, 10145122), (4, 5072561), (13, 1560788), (26, 780394), (31, 654524), (41, 494884), (52, 390197), (62, 327262), (82, 247442), (124, 163631), (164, 123721), (307, 66092), (403, 50348), (533, 38068), (614, 33046), (806, 25174), (1066, 19034), (1228, 16523), (1271, 15964), (1612, 12587), (2132, 9517), (2542, 7982), (3991, 5084)]