20149601840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{51581}}^1$

素因数の和:51870

約数の個数: 80

約数和(自身を含む): 49506340320

約数和(自身を除く): 29356738480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 257, 304, 380, 514, 760, 1028, 1285, 1520, 2056, 2570, 4112, 4883, 5140, 9766, 10280, 19532, 20560, 24415, 39064, 48830, 51581, 78128, 97660, 103162, 195320, 206324, 257905, 390640, 412648, 515810, 825296, 980039, 1031620, 1960078, 2063240, 3920156, 4126480, 4900195, 7840312, 9800390, 13256317, 15680624, 19600780, 26512634, 39201560, 53025268, 66281585, 78403120, 106050536, 132563170, 212101072, 251870023, 265126340, 503740046, 530252680, 1007480092, 1060505360, 1259350115, 2014960184, 2518700230, 4029920368, 5037400460, 10074800920, 20149601840]

約数ペア:

[(1, 20149601840), (2, 10074800920), (4, 5037400460), (5, 4029920368), (8, 2518700230), (10, 2014960184), (16, 1259350115), (19, 1060505360), (20, 1007480092), (38, 530252680), (40, 503740046), (76, 265126340), (80, 251870023), (95, 212101072), (152, 132563170), (190, 106050536), (257, 78403120), (304, 66281585), (380, 53025268), (514, 39201560), (760, 26512634), (1028, 19600780), (1285, 15680624), (1520, 13256317), (2056, 9800390), (2570, 7840312), (4112, 4900195), (4883, 4126480), (5140, 3920156), (9766, 2063240), (10280, 1960078), (19532, 1031620), (20560, 980039), (24415, 825296), (39064, 515810), (48830, 412648), (51581, 390640), (78128, 257905), (97660, 206324), (103162, 195320)]