80213120

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:374

約数の個数: 128

約数和(自身を含む): 213857280

約数和(自身を除く): 133644160

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, 160, 208, 248, 260, 310, 311, 320, 403, 416, 496, 520, 620, 622, 640, 806, 832, 992, 1040, 1240, 1244, 1555, 1612, 1664, 1984, 2015, 2080, 2480, 2488, 3110, 3224, 3968, 4030, 4043, 4160, 4960, 4976, 6220, 6448, 8060, 8086, 8320, 9641, 9920, 9952, 12440, 12896, 16120, 16172, 19282, 19840, 19904, 20215, 24880, 25792, 32240, 32344, 38564, 39808, 40430, 48205, 49760, 51584, 64480, 64688, 77128, 80860, 96410, 99520, 125333, 128960, 129376, 154256, 161720, 192820, 199040, 250666, 257920, 258752, 308512, 323440, 385640, 501332, 517504, 617024, 626665, 646880, 771280, 1002664, 1234048, 1253330, 1293760, 1542560, 2005328, 2506660, 2587520, 3085120, 4010656, 5013320, 6170240, 8021312, 10026640, 16042624, 20053280, 40106560, 80213120]

約数ペア:

[(1, 80213120), (2, 40106560), (4, 20053280), (5, 16042624), (8, 10026640), (10, 8021312), (13, 6170240), (16, 5013320), (20, 4010656), (26, 3085120), (31, 2587520), (32, 2506660), (40, 2005328), (52, 1542560), (62, 1293760), (64, 1253330), (65, 1234048), (80, 1002664), (104, 771280), (124, 646880), (128, 626665), (130, 617024), (155, 517504), (160, 501332), (208, 385640), (248, 323440), (260, 308512), (310, 258752), (311, 257920), (320, 250666), (403, 199040), (416, 192820), (496, 161720), (520, 154256), (620, 129376), (622, 128960), (640, 125333), (806, 99520), (832, 96410), (992, 80860), (1040, 77128), (1240, 64688), (1244, 64480), (1555, 51584), (1612, 49760), (1664, 48205), (1984, 40430), (2015, 39808), (2080, 38564), (2480, 32344), (2488, 32240), (3110, 25792), (3224, 24880), (3968, 20215), (4030, 19904), (4043, 19840), (4160, 19282), (4960, 16172), (4976, 16120), (6220, 12896), (6448, 12440), (8060, 9952), (8086, 9920), (8320, 9641)]