78427520

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:176

約数の個数: 128

約数和(自身を含む): 199756800

約数和(自身を除く): 121329280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 59, 62, 64, 67, 80, 118, 124, 128, 134, 155, 160, 236, 248, 268, 295, 310, 320, 335, 472, 496, 536, 590, 620, 640, 670, 944, 992, 1072, 1180, 1240, 1340, 1829, 1888, 1984, 2077, 2144, 2360, 2480, 2680, 3658, 3776, 3953, 3968, 4154, 4288, 4720, 4960, 5360, 7316, 7552, 7906, 8308, 8576, 9145, 9440, 9920, 10385, 10720, 14632, 15812, 16616, 18290, 18880, 19765, 19840, 20770, 21440, 29264, 31624, 33232, 36580, 37760, 39530, 41540, 42880, 58528, 63248, 66464, 73160, 79060, 83080, 117056, 122543, 126496, 132928, 146320, 158120, 166160, 234112, 245086, 252992, 265856, 292640, 316240, 332320, 490172, 505984, 585280, 612715, 632480, 664640, 980344, 1170560, 1225430, 1264960, 1329280, 1960688, 2450860, 2529920, 3921376, 4901720, 7842752, 9803440, 15685504, 19606880, 39213760, 78427520]

約数ペア:

[(1, 78427520), (2, 39213760), (4, 19606880), (5, 15685504), (8, 9803440), (10, 7842752), (16, 4901720), (20, 3921376), (31, 2529920), (32, 2450860), (40, 1960688), (59, 1329280), (62, 1264960), (64, 1225430), (67, 1170560), (80, 980344), (118, 664640), (124, 632480), (128, 612715), (134, 585280), (155, 505984), (160, 490172), (236, 332320), (248, 316240), (268, 292640), (295, 265856), (310, 252992), (320, 245086), (335, 234112), (472, 166160), (496, 158120), (536, 146320), (590, 132928), (620, 126496), (640, 122543), (670, 117056), (944, 83080), (992, 79060), (1072, 73160), (1180, 66464), (1240, 63248), (1340, 58528), (1829, 42880), (1888, 41540), (1984, 39530), (2077, 37760), (2144, 36580), (2360, 33232), (2480, 31624), (2680, 29264), (3658, 21440), (3776, 20770), (3953, 19840), (3968, 19765), (4154, 18880), (4288, 18290), (4720, 16616), (4960, 15812), (5360, 14632), (7316, 10720), (7552, 10385), (7906, 9920), (8308, 9440), (8576, 9145)]