65540140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{311}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 141994944

約数和(自身を除く): 76454804

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 257, 311, 410, 514, 622, 820, 1028, 1244, 1285, 1555, 2570, 3110, 5140, 6220, 10537, 12751, 21074, 25502, 42148, 51004, 52685, 63755, 79927, 105370, 127510, 159854, 210740, 255020, 319708, 399635, 799270, 1598540, 3277007, 6554014, 13108028, 16385035, 32770070, 65540140]

約数ペア:

[(1, 65540140), (2, 32770070), (4, 16385035), (5, 13108028), (10, 6554014), (20, 3277007), (41, 1598540), (82, 799270), (164, 399635), (205, 319708), (257, 255020), (311, 210740), (410, 159854), (514, 127510), (622, 105370), (820, 79927), (1028, 63755), (1244, 52685), (1285, 51004), (1555, 42148), (2570, 25502), (3110, 21074), (5140, 12751), (6220, 10537)]