78487040

素因数分解:

$2^9\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:120

約数の個数: 160

約数和(自身を含む): 207415296

約数和(自身を除く): 128928256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 43, 46, 62, 64, 80, 86, 92, 115, 124, 128, 155, 160, 172, 184, 215, 230, 248, 256, 310, 320, 344, 368, 430, 460, 496, 512, 620, 640, 688, 713, 736, 860, 920, 989, 992, 1240, 1280, 1333, 1376, 1426, 1472, 1720, 1840, 1978, 1984, 2480, 2560, 2666, 2752, 2852, 2944, 3440, 3565, 3680, 3956, 3968, 4945, 4960, 5332, 5504, 5704, 5888, 6665, 6880, 7130, 7360, 7912, 7936, 9890, 9920, 10664, 11008, 11408, 11776, 13330, 13760, 14260, 14720, 15824, 15872, 19780, 19840, 21328, 22016, 22816, 26660, 27520, 28520, 29440, 30659, 31648, 39560, 39680, 42656, 45632, 53320, 55040, 57040, 58880, 61318, 63296, 79120, 79360, 85312, 91264, 106640, 110080, 114080, 122636, 126592, 153295, 158240, 170624, 182528, 213280, 228160, 245272, 253184, 306590, 316480, 341248, 365056, 426560, 456320, 490544, 506368, 613180, 632960, 682496, 853120, 912640, 981088, 1226360, 1265920, 1706240, 1825280, 1962176, 2452720, 2531840, 3412480, 3924352, 4905440, 7848704, 9810880, 15697408, 19621760, 39243520, 78487040]

約数ペア:

[(1, 78487040), (2, 39243520), (4, 19621760), (5, 15697408), (8, 9810880), (10, 7848704), (16, 4905440), (20, 3924352), (23, 3412480), (31, 2531840), (32, 2452720), (40, 1962176), (43, 1825280), (46, 1706240), (62, 1265920), (64, 1226360), (80, 981088), (86, 912640), (92, 853120), (115, 682496), (124, 632960), (128, 613180), (155, 506368), (160, 490544), (172, 456320), (184, 426560), (215, 365056), (230, 341248), (248, 316480), (256, 306590), (310, 253184), (320, 245272), (344, 228160), (368, 213280), (430, 182528), (460, 170624), (496, 158240), (512, 153295), (620, 126592), (640, 122636), (688, 114080), (713, 110080), (736, 106640), (860, 91264), (920, 85312), (989, 79360), (992, 79120), (1240, 63296), (1280, 61318), (1333, 58880), (1376, 57040), (1426, 55040), (1472, 53320), (1720, 45632), (1840, 42656), (1978, 39680), (1984, 39560), (2480, 31648), (2560, 30659), (2666, 29440), (2752, 28520), (2852, 27520), (2944, 26660), (3440, 22816), (3565, 22016), (3680, 21328), (3956, 19840), (3968, 19780), (4945, 15872), (4960, 15824), (5332, 14720), (5504, 14260), (5704, 13760), (5888, 13330), (6665, 11776), (6880, 11408), (7130, 11008), (7360, 10664), (7912, 9920), (7936, 9890)]