19654880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:161

約数の個数: 144

約数和(自身を含む): 56881440

約数和(自身を除く): 37226560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 70, 80, 92, 98, 109, 112, 115, 140, 160, 161, 184, 196, 218, 224, 230, 245, 280, 322, 368, 392, 436, 460, 490, 545, 560, 644, 736, 763, 784, 805, 872, 920, 980, 1090, 1120, 1127, 1288, 1526, 1568, 1610, 1744, 1840, 1960, 2180, 2254, 2507, 2576, 3052, 3220, 3488, 3680, 3815, 3920, 4360, 4508, 5014, 5152, 5341, 5635, 6104, 6440, 7630, 7840, 8720, 9016, 10028, 10682, 11270, 12208, 12535, 12880, 15260, 17440, 17549, 18032, 20056, 21364, 22540, 24416, 25070, 25760, 26705, 30520, 35098, 36064, 40112, 42728, 45080, 50140, 53410, 61040, 70196, 80224, 85456, 87745, 90160, 100280, 106820, 122080, 122843, 140392, 170912, 175490, 180320, 200560, 213640, 245686, 280784, 350980, 401120, 427280, 491372, 561568, 614215, 701960, 854560, 982744, 1228430, 1403920, 1965488, 2456860, 2807840, 3930976, 4913720, 9827440, 19654880]

約数ペア:

[(1, 19654880), (2, 9827440), (4, 4913720), (5, 3930976), (7, 2807840), (8, 2456860), (10, 1965488), (14, 1403920), (16, 1228430), (20, 982744), (23, 854560), (28, 701960), (32, 614215), (35, 561568), (40, 491372), (46, 427280), (49, 401120), (56, 350980), (70, 280784), (80, 245686), (92, 213640), (98, 200560), (109, 180320), (112, 175490), (115, 170912), (140, 140392), (160, 122843), (161, 122080), (184, 106820), (196, 100280), (218, 90160), (224, 87745), (230, 85456), (245, 80224), (280, 70196), (322, 61040), (368, 53410), (392, 50140), (436, 45080), (460, 42728), (490, 40112), (545, 36064), (560, 35098), (644, 30520), (736, 26705), (763, 25760), (784, 25070), (805, 24416), (872, 22540), (920, 21364), (980, 20056), (1090, 18032), (1120, 17549), (1127, 17440), (1288, 15260), (1526, 12880), (1568, 12535), (1610, 12208), (1744, 11270), (1840, 10682), (1960, 10028), (2180, 9016), (2254, 8720), (2507, 7840), (2576, 7630), (3052, 6440), (3220, 6104), (3488, 5635), (3680, 5341), (3815, 5152), (3920, 5014), (4360, 4508)]