19898889220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{383113}}^1$

素因数の和:383189

約数の個数: 72

約数和(自身を含む): 49527445464

約数和(自身を除く): 29628556244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 490, 530, 742, 980, 1060, 1484, 1855, 2597, 3710, 5194, 7420, 10388, 12985, 25970, 51940, 383113, 766226, 1532452, 1915565, 2681791, 3831130, 5363582, 7662260, 10727164, 13408955, 18772537, 20304989, 26817910, 37545074, 40609978, 53635820, 75090148, 81219956, 93862685, 101524945, 142134923, 187725370, 203049890, 284269846, 375450740, 406099780, 568539692, 710674615, 994944461, 1421349230, 1989888922, 2842698460, 3979777844, 4974722305, 9949444610, 19898889220]

約数ペア:

[(1, 19898889220), (2, 9949444610), (4, 4974722305), (5, 3979777844), (7, 2842698460), (10, 1989888922), (14, 1421349230), (20, 994944461), (28, 710674615), (35, 568539692), (49, 406099780), (53, 375450740), (70, 284269846), (98, 203049890), (106, 187725370), (140, 142134923), (196, 101524945), (212, 93862685), (245, 81219956), (265, 75090148), (371, 53635820), (490, 40609978), (530, 37545074), (742, 26817910), (980, 20304989), (1060, 18772537), (1484, 13408955), (1855, 10727164), (2597, 7662260), (3710, 5363582), (5194, 3831130), (7420, 2681791), (10388, 1915565), (12985, 1532452), (25970, 766226), (51940, 383113)]