28195960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 71018640

約数和(自身を除く): 42822680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 97, 104, 130, 169, 172, 194, 215, 260, 338, 344, 388, 430, 485, 520, 559, 676, 776, 845, 860, 970, 1118, 1261, 1352, 1690, 1720, 1940, 2236, 2522, 2795, 3380, 3880, 4171, 4472, 5044, 5590, 6305, 6760, 7267, 8342, 10088, 11180, 12610, 14534, 16393, 16684, 20855, 22360, 25220, 29068, 32786, 33368, 36335, 41710, 50440, 54223, 58136, 65572, 72670, 81965, 83420, 108446, 131144, 145340, 163930, 166840, 216892, 271115, 290680, 327860, 433784, 542230, 655720, 704899, 1084460, 1409798, 2168920, 2819596, 3524495, 5639192, 7048990, 14097980, 28195960]

約数ペア:

[(1, 28195960), (2, 14097980), (4, 7048990), (5, 5639192), (8, 3524495), (10, 2819596), (13, 2168920), (20, 1409798), (26, 1084460), (40, 704899), (43, 655720), (52, 542230), (65, 433784), (86, 327860), (97, 290680), (104, 271115), (130, 216892), (169, 166840), (172, 163930), (194, 145340), (215, 131144), (260, 108446), (338, 83420), (344, 81965), (388, 72670), (430, 65572), (485, 58136), (520, 54223), (559, 50440), (676, 41710), (776, 36335), (845, 33368), (860, 32786), (970, 29068), (1118, 25220), (1261, 22360), (1352, 20855), (1690, 16684), (1720, 16393), (1940, 14534), (2236, 12610), (2522, 11180), (2795, 10088), (3380, 8342), (3880, 7267), (4171, 6760), (4472, 6305), (5044, 5590)]