21026928

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1142

約数の個数: 80

約数和(自身を含む): 60440576

約数和(自身を除く): 39413648

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 39, 48, 52, 62, 78, 93, 104, 124, 156, 186, 208, 248, 312, 372, 403, 496, 624, 744, 806, 1087, 1209, 1488, 1612, 2174, 2418, 3224, 3261, 4348, 4836, 6448, 6522, 8696, 9672, 13044, 14131, 17392, 19344, 26088, 28262, 33697, 42393, 52176, 56524, 67394, 84786, 101091, 113048, 134788, 169572, 202182, 226096, 269576, 339144, 404364, 438061, 539152, 678288, 808728, 876122, 1314183, 1617456, 1752244, 2628366, 3504488, 5256732, 7008976, 10513464, 21026928]

約数ペア:

[(1, 21026928), (2, 10513464), (3, 7008976), (4, 5256732), (6, 3504488), (8, 2628366), (12, 1752244), (13, 1617456), (16, 1314183), (24, 876122), (26, 808728), (31, 678288), (39, 539152), (48, 438061), (52, 404364), (62, 339144), (78, 269576), (93, 226096), (104, 202182), (124, 169572), (156, 134788), (186, 113048), (208, 101091), (248, 84786), (312, 67394), (372, 56524), (403, 52176), (496, 42393), (624, 33697), (744, 28262), (806, 26088), (1087, 19344), (1209, 17392), (1488, 14131), (1612, 13044), (2174, 9672), (2418, 8696), (3224, 6522), (3261, 6448), (4348, 4836)]