400423760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4691}}^1$

素因数の和:4812

約数の個数: 80

約数和(自身を含む): 1026309312

約数和(自身を除く): 625885552

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 97, 110, 176, 194, 220, 388, 440, 485, 776, 880, 970, 1067, 1552, 1940, 2134, 3880, 4268, 4691, 5335, 7760, 8536, 9382, 10670, 17072, 18764, 21340, 23455, 37528, 42680, 46910, 51601, 75056, 85360, 93820, 103202, 187640, 206404, 258005, 375280, 412808, 455027, 516010, 825616, 910054, 1032020, 1820108, 2064040, 2275135, 3640216, 4128080, 4550270, 5005297, 7280432, 9100540, 10010594, 18201080, 20021188, 25026485, 36402160, 40042376, 50052970, 80084752, 100105940, 200211880, 400423760]

約数ペア:

[(1, 400423760), (2, 200211880), (4, 100105940), (5, 80084752), (8, 50052970), (10, 40042376), (11, 36402160), (16, 25026485), (20, 20021188), (22, 18201080), (40, 10010594), (44, 9100540), (55, 7280432), (80, 5005297), (88, 4550270), (97, 4128080), (110, 3640216), (176, 2275135), (194, 2064040), (220, 1820108), (388, 1032020), (440, 910054), (485, 825616), (776, 516010), (880, 455027), (970, 412808), (1067, 375280), (1552, 258005), (1940, 206404), (2134, 187640), (3880, 103202), (4268, 93820), (4691, 85360), (5335, 75056), (7760, 51601), (8536, 46910), (9382, 42680), (10670, 37528), (17072, 23455), (18764, 21340)]