64686640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{42557}}^1$

素因数の和:42589

約数の個数: 40

約数和(自身を含む): 158315760

約数和(自身を除く): 93629120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 42557, 85114, 170228, 212785, 340456, 425570, 680912, 808583, 851140, 1617166, 1702280, 3234332, 3404560, 4042915, 6468664, 8085830, 12937328, 16171660, 32343320, 64686640]

約数ペア:

[(1, 64686640), (2, 32343320), (4, 16171660), (5, 12937328), (8, 8085830), (10, 6468664), (16, 4042915), (19, 3404560), (20, 3234332), (38, 1702280), (40, 1617166), (76, 851140), (80, 808583), (95, 680912), (152, 425570), (190, 340456), (304, 212785), (380, 170228), (760, 85114), (1520, 42557)]