320852480

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:378

約数の個数: 160

約数和(自身を含む): 857945088

約数和(自身を除く): 537092608

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, 256, 260, 310, 311, 320, 403, 416, 496, 512, 520, 620, 622, 640, 806, 832, 992, 1040, 1240, 1244, 1280, 1555, 1612, 1664, 1984, 2015, 2080, 2480, 2488, 2560, 3110, 3224, 3328, 3968, 4030, 4043, 4160, 4960, 4976, 6220, 6448, 6656, 7936, 8060, 8086, 8320, 9641, 9920, 9952, 12440, 12896, 15872, 16120, 16172, 16640, 19282, 19840, 19904, 20215, 24880, 25792, 32240, 32344, 33280, 38564, 39680, 39808, 40430, 48205, 49760, 51584, 64480, 64688, 77128, 79360, 79616, 80860, 96410, 99520, 103168, 125333, 128960, 129376, 154256, 159232, 161720, 192820, 199040, 206336, 250666, 257920, 258752, 308512, 323440, 385640, 398080, 501332, 515840, 517504, 617024, 626665, 646880, 771280, 796160, 1002664, 1031680, 1035008, 1234048, 1253330, 1293760, 1542560, 2005328, 2070016, 2468096, 2506660, 2587520, 3085120, 4010656, 4936192, 5013320, 5175040, 6170240, 8021312, 10026640, 10350080, 12340480, 16042624, 20053280, 24680960, 32085248, 40106560, 64170496, 80213120, 160426240, 320852480]

約数ペア:

[(1, 320852480), (2, 160426240), (4, 80213120), (5, 64170496), (8, 40106560), (10, 32085248), (13, 24680960), (16, 20053280), (20, 16042624), (26, 12340480), (31, 10350080), (32, 10026640), (40, 8021312), (52, 6170240), (62, 5175040), (64, 5013320), (65, 4936192), (80, 4010656), (104, 3085120), (124, 2587520), (128, 2506660), (130, 2468096), (155, 2070016), (160, 2005328), (208, 1542560), (248, 1293760), (256, 1253330), (260, 1234048), (310, 1035008), (311, 1031680), (320, 1002664), (403, 796160), (416, 771280), (496, 646880), (512, 626665), (520, 617024), (620, 517504), (622, 515840), (640, 501332), (806, 398080), (832, 385640), (992, 323440), (1040, 308512), (1240, 258752), (1244, 257920), (1280, 250666), (1555, 206336), (1612, 199040), (1664, 192820), (1984, 161720), (2015, 159232), (2080, 154256), (2480, 129376), (2488, 128960), (2560, 125333), (3110, 103168), (3224, 99520), (3328, 96410), (3968, 80860), (4030, 79616), (4043, 79360), (4160, 77128), (4960, 64688), (4976, 64480), (6220, 51584), (6448, 49760), (6656, 48205), (7936, 40430), (8060, 39808), (8086, 39680), (8320, 38564), (9641, 33280), (9920, 32344), (9952, 32240), (12440, 25792), (12896, 24880), (15872, 20215), (16120, 19904), (16172, 19840), (16640, 19282)]