28422940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 144

約数和(自身を含む): 78829632

約数和(自身を除く): 50406692

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 49, 52, 65, 70, 91, 92, 97, 98, 115, 130, 140, 161, 182, 194, 196, 230, 245, 260, 299, 322, 364, 388, 455, 460, 485, 490, 598, 637, 644, 679, 805, 910, 970, 980, 1127, 1196, 1261, 1274, 1358, 1495, 1610, 1820, 1940, 2093, 2231, 2254, 2522, 2548, 2716, 2990, 3185, 3220, 3395, 4186, 4462, 4508, 4753, 5044, 5635, 5980, 6305, 6370, 6790, 8372, 8827, 8924, 9506, 10465, 11155, 11270, 12610, 12740, 13580, 14651, 15617, 17654, 19012, 20930, 22310, 22540, 23765, 25220, 29003, 29302, 31234, 35308, 41860, 44135, 44620, 47530, 58006, 58604, 61789, 62468, 73255, 78085, 88270, 95060, 109319, 116012, 123578, 145015, 146510, 156170, 176540, 203021, 218638, 247156, 290030, 293020, 308945, 312340, 406042, 437276, 546595, 580060, 617890, 812084, 1015105, 1093190, 1235780, 1421147, 2030210, 2186380, 2842294, 4060420, 5684588, 7105735, 14211470, 28422940]

約数ペア:

[(1, 28422940), (2, 14211470), (4, 7105735), (5, 5684588), (7, 4060420), (10, 2842294), (13, 2186380), (14, 2030210), (20, 1421147), (23, 1235780), (26, 1093190), (28, 1015105), (35, 812084), (46, 617890), (49, 580060), (52, 546595), (65, 437276), (70, 406042), (91, 312340), (92, 308945), (97, 293020), (98, 290030), (115, 247156), (130, 218638), (140, 203021), (161, 176540), (182, 156170), (194, 146510), (196, 145015), (230, 123578), (245, 116012), (260, 109319), (299, 95060), (322, 88270), (364, 78085), (388, 73255), (455, 62468), (460, 61789), (485, 58604), (490, 58006), (598, 47530), (637, 44620), (644, 44135), (679, 41860), (805, 35308), (910, 31234), (970, 29302), (980, 29003), (1127, 25220), (1196, 23765), (1261, 22540), (1274, 22310), (1358, 20930), (1495, 19012), (1610, 17654), (1820, 15617), (1940, 14651), (2093, 13580), (2231, 12740), (2254, 12610), (2522, 11270), (2548, 11155), (2716, 10465), (2990, 9506), (3185, 8924), (3220, 8827), (3395, 8372), (4186, 6790), (4462, 6370), (4508, 6305), (4753, 5980), (5044, 5635)]