80986880

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:222

約数の個数: 144

約数和(自身を含む): 217023744

約数和(自身を除く): 136036864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 157, 160, 208, 248, 256, 260, 310, 314, 320, 403, 416, 496, 520, 620, 628, 640, 785, 806, 832, 992, 1040, 1240, 1256, 1280, 1570, 1612, 1664, 1984, 2015, 2041, 2080, 2480, 2512, 3140, 3224, 3328, 3968, 4030, 4082, 4160, 4867, 4960, 5024, 6280, 6448, 7936, 8060, 8164, 8320, 9734, 9920, 10048, 10205, 12560, 12896, 16120, 16328, 16640, 19468, 19840, 20096, 20410, 24335, 25120, 25792, 32240, 32656, 38936, 39680, 40192, 40820, 48670, 50240, 51584, 63271, 64480, 65312, 77872, 81640, 97340, 100480, 103168, 126542, 128960, 130624, 155744, 163280, 194680, 200960, 253084, 257920, 261248, 311488, 316355, 326560, 389360, 506168, 515840, 522496, 622976, 632710, 653120, 778720, 1012336, 1245952, 1265420, 1306240, 1557440, 2024672, 2530840, 2612480, 3114880, 4049344, 5061680, 6229760, 8098688, 10123360, 16197376, 20246720, 40493440, 80986880]

約数ペア:

[(1, 80986880), (2, 40493440), (4, 20246720), (5, 16197376), (8, 10123360), (10, 8098688), (13, 6229760), (16, 5061680), (20, 4049344), (26, 3114880), (31, 2612480), (32, 2530840), (40, 2024672), (52, 1557440), (62, 1306240), (64, 1265420), (65, 1245952), (80, 1012336), (104, 778720), (124, 653120), (128, 632710), (130, 622976), (155, 522496), (157, 515840), (160, 506168), (208, 389360), (248, 326560), (256, 316355), (260, 311488), (310, 261248), (314, 257920), (320, 253084), (403, 200960), (416, 194680), (496, 163280), (520, 155744), (620, 130624), (628, 128960), (640, 126542), (785, 103168), (806, 100480), (832, 97340), (992, 81640), (1040, 77872), (1240, 65312), (1256, 64480), (1280, 63271), (1570, 51584), (1612, 50240), (1664, 48670), (1984, 40820), (2015, 40192), (2041, 39680), (2080, 38936), (2480, 32656), (2512, 32240), (3140, 25792), (3224, 25120), (3328, 24335), (3968, 20410), (4030, 20096), (4082, 19840), (4160, 19468), (4867, 16640), (4960, 16328), (5024, 16120), (6280, 12896), (6448, 12560), (7936, 10205), (8060, 10048), (8164, 9920), (8320, 9734)]