31565440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:130

約数の個数: 128

約数和(自身を含む): 81861120

約数和(自身を除く): 50295680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 43, 62, 64, 74, 80, 86, 124, 128, 148, 155, 160, 172, 185, 215, 248, 296, 310, 320, 344, 370, 430, 496, 592, 620, 640, 688, 740, 860, 992, 1147, 1184, 1240, 1333, 1376, 1480, 1591, 1720, 1984, 2294, 2368, 2480, 2666, 2752, 2960, 3182, 3440, 3968, 4588, 4736, 4960, 5332, 5504, 5735, 5920, 6364, 6665, 6880, 7955, 9176, 9920, 10664, 11470, 11840, 12728, 13330, 13760, 15910, 18352, 19840, 21328, 22940, 23680, 25456, 26660, 27520, 31820, 36704, 42656, 45880, 49321, 50912, 53320, 63640, 73408, 85312, 91760, 98642, 101824, 106640, 127280, 146816, 170624, 183520, 197284, 203648, 213280, 246605, 254560, 367040, 394568, 426560, 493210, 509120, 734080, 789136, 853120, 986420, 1018240, 1578272, 1972840, 3156544, 3945680, 6313088, 7891360, 15782720, 31565440]

約数ペア:

[(1, 31565440), (2, 15782720), (4, 7891360), (5, 6313088), (8, 3945680), (10, 3156544), (16, 1972840), (20, 1578272), (31, 1018240), (32, 986420), (37, 853120), (40, 789136), (43, 734080), (62, 509120), (64, 493210), (74, 426560), (80, 394568), (86, 367040), (124, 254560), (128, 246605), (148, 213280), (155, 203648), (160, 197284), (172, 183520), (185, 170624), (215, 146816), (248, 127280), (296, 106640), (310, 101824), (320, 98642), (344, 91760), (370, 85312), (430, 73408), (496, 63640), (592, 53320), (620, 50912), (640, 49321), (688, 45880), (740, 42656), (860, 36704), (992, 31820), (1147, 27520), (1184, 26660), (1240, 25456), (1333, 23680), (1376, 22940), (1480, 21328), (1591, 19840), (1720, 18352), (1984, 15910), (2294, 13760), (2368, 13330), (2480, 12728), (2666, 11840), (2752, 11470), (2960, 10664), (3182, 9920), (3440, 9176), (3968, 7955), (4588, 6880), (4736, 6665), (4960, 6364), (5332, 5920), (5504, 5735)]