305710040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1\times {\mathrm{359}}^1$

素因数の和:780

約数の個数: 64

約数和(自身を含む): 703080000

約数和(自身を除く): 397369960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 349, 359, 488, 610, 698, 718, 1220, 1396, 1436, 1745, 1795, 2440, 2792, 2872, 3490, 3590, 6980, 7180, 13960, 14360, 21289, 21899, 42578, 43798, 85156, 87596, 106445, 109495, 125291, 170312, 175192, 212890, 218990, 250582, 425780, 437980, 501164, 626455, 851560, 875960, 1002328, 1252910, 2505820, 5011640, 7642751, 15285502, 30571004, 38213755, 61142008, 76427510, 152855020, 305710040]

約数ペア:

[(1, 305710040), (2, 152855020), (4, 76427510), (5, 61142008), (8, 38213755), (10, 30571004), (20, 15285502), (40, 7642751), (61, 5011640), (122, 2505820), (244, 1252910), (305, 1002328), (349, 875960), (359, 851560), (488, 626455), (610, 501164), (698, 437980), (718, 425780), (1220, 250582), (1396, 218990), (1436, 212890), (1745, 175192), (1795, 170312), (2440, 125291), (2792, 109495), (2872, 106445), (3490, 87596), (3590, 85156), (6980, 43798), (7180, 42578), (13960, 21899), (14360, 21289)]