399483280

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{1009}}^1$

素因数の和:1137

約数の個数: 120

約数和(自身を含む): 1092218040

約数和(自身を除く): 692734760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 101, 112, 140, 196, 202, 245, 280, 392, 404, 490, 505, 560, 707, 784, 808, 980, 1009, 1010, 1414, 1616, 1960, 2018, 2020, 2828, 3535, 3920, 4036, 4040, 4949, 5045, 5656, 7063, 7070, 8072, 8080, 9898, 10090, 11312, 14126, 14140, 16144, 19796, 20180, 24745, 28252, 28280, 35315, 39592, 40360, 49441, 49490, 56504, 56560, 70630, 79184, 80720, 98882, 98980, 101909, 113008, 141260, 197764, 197960, 203818, 247205, 282520, 395528, 395920, 407636, 494410, 509545, 565040, 713363, 791056, 815272, 988820, 1019090, 1426726, 1630544, 1977640, 2038180, 2853452, 3566815, 3955280, 4076360, 4993541, 5706904, 7133630, 8152720, 9987082, 11413808, 14267260, 19974164, 24967705, 28534520, 39948328, 49935410, 57069040, 79896656, 99870820, 199741640, 399483280]

約数ペア:

[(1, 399483280), (2, 199741640), (4, 99870820), (5, 79896656), (7, 57069040), (8, 49935410), (10, 39948328), (14, 28534520), (16, 24967705), (20, 19974164), (28, 14267260), (35, 11413808), (40, 9987082), (49, 8152720), (56, 7133630), (70, 5706904), (80, 4993541), (98, 4076360), (101, 3955280), (112, 3566815), (140, 2853452), (196, 2038180), (202, 1977640), (245, 1630544), (280, 1426726), (392, 1019090), (404, 988820), (490, 815272), (505, 791056), (560, 713363), (707, 565040), (784, 509545), (808, 494410), (980, 407636), (1009, 395920), (1010, 395528), (1414, 282520), (1616, 247205), (1960, 203818), (2018, 197960), (2020, 197764), (2828, 141260), (3535, 113008), (3920, 101909), (4036, 98980), (4040, 98882), (4949, 80720), (5045, 79184), (5656, 70630), (7063, 56560), (7070, 56504), (8072, 49490), (8080, 49441), (9898, 40360), (10090, 39592), (11312, 35315), (14126, 28280), (14140, 28252), (16144, 24745), (19796, 20180)]