657020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2$

素因数の和:67

約数の個数: 72

約数和(自身を含む): 1792224

約数和(自身を除く): 1135204

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 361, 364, 380, 455, 494, 532, 665, 722, 910, 988, 1235, 1330, 1444, 1729, 1805, 1820, 2470, 2527, 2660, 3458, 3610, 4693, 4940, 5054, 6916, 7220, 8645, 9386, 10108, 12635, 17290, 18772, 23465, 25270, 32851, 34580, 46930, 50540, 65702, 93860, 131404, 164255, 328510, 657020]

約数ペア:

[(1, 657020), (2, 328510), (4, 164255), (5, 131404), (7, 93860), (10, 65702), (13, 50540), (14, 46930), (19, 34580), (20, 32851), (26, 25270), (28, 23465), (35, 18772), (38, 17290), (52, 12635), (65, 10108), (70, 9386), (76, 8645), (91, 7220), (95, 6916), (130, 5054), (133, 4940), (140, 4693), (182, 3610), (190, 3458), (247, 2660), (260, 2527), (266, 2470), (361, 1820), (364, 1805), (380, 1729), (455, 1444), (494, 1330), (532, 1235), (665, 988), (722, 910)]