18768640

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 144

約数和(自身を含む): 51803136

約数和(自身を除く): 33034496

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 43, 44, 55, 62, 64, 80, 86, 88, 110, 124, 128, 155, 160, 172, 176, 215, 220, 248, 256, 310, 320, 341, 344, 352, 430, 440, 473, 496, 620, 640, 682, 688, 704, 860, 880, 946, 992, 1240, 1280, 1333, 1364, 1376, 1408, 1705, 1720, 1760, 1892, 1984, 2365, 2480, 2666, 2728, 2752, 2816, 3410, 3440, 3520, 3784, 3968, 4730, 4960, 5332, 5456, 5504, 6665, 6820, 6880, 7040, 7568, 7936, 9460, 9920, 10664, 10912, 11008, 13330, 13640, 13760, 14080, 14663, 15136, 18920, 19840, 21328, 21824, 26660, 27280, 27520, 29326, 30272, 37840, 39680, 42656, 43648, 53320, 54560, 55040, 58652, 60544, 73315, 75680, 85312, 87296, 106640, 109120, 117304, 121088, 146630, 151360, 170624, 213280, 218240, 234608, 293260, 302720, 341248, 426560, 436480, 469216, 586520, 605440, 853120, 938432, 1173040, 1706240, 1876864, 2346080, 3753728, 4692160, 9384320, 18768640]

約数ペア:

[(1, 18768640), (2, 9384320), (4, 4692160), (5, 3753728), (8, 2346080), (10, 1876864), (11, 1706240), (16, 1173040), (20, 938432), (22, 853120), (31, 605440), (32, 586520), (40, 469216), (43, 436480), (44, 426560), (55, 341248), (62, 302720), (64, 293260), (80, 234608), (86, 218240), (88, 213280), (110, 170624), (124, 151360), (128, 146630), (155, 121088), (160, 117304), (172, 109120), (176, 106640), (215, 87296), (220, 85312), (248, 75680), (256, 73315), (310, 60544), (320, 58652), (341, 55040), (344, 54560), (352, 53320), (430, 43648), (440, 42656), (473, 39680), (496, 37840), (620, 30272), (640, 29326), (682, 27520), (688, 27280), (704, 26660), (860, 21824), (880, 21328), (946, 19840), (992, 18920), (1240, 15136), (1280, 14663), (1333, 14080), (1364, 13760), (1376, 13640), (1408, 13330), (1705, 11008), (1720, 10912), (1760, 10664), (1892, 9920), (1984, 9460), (2365, 7936), (2480, 7568), (2666, 7040), (2728, 6880), (2752, 6820), (2816, 6665), (3410, 5504), (3440, 5456), (3520, 5332), (3784, 4960), (3968, 4730)]