81518800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:317

約数の個数: 120

約数和(自身を含む): 216986112

約数和(自身を除く): 135467312

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 97, 100, 110, 176, 191, 194, 200, 220, 275, 382, 388, 400, 440, 485, 550, 764, 776, 880, 955, 970, 1067, 1100, 1528, 1552, 1910, 1940, 2101, 2134, 2200, 2425, 3056, 3820, 3880, 4202, 4268, 4400, 4775, 4850, 5335, 7640, 7760, 8404, 8536, 9550, 9700, 10505, 10670, 15280, 16808, 17072, 18527, 19100, 19400, 21010, 21340, 26675, 33616, 37054, 38200, 38800, 42020, 42680, 52525, 53350, 74108, 76400, 84040, 85360, 92635, 105050, 106700, 148216, 168080, 185270, 203797, 210100, 213400, 296432, 370540, 407594, 420200, 426800, 463175, 741080, 815188, 840400, 926350, 1018985, 1482160, 1630376, 1852700, 2037970, 3260752, 3705400, 4075940, 5094925, 7410800, 8151880, 10189850, 16303760, 20379700, 40759400, 81518800]

約数ペア:

[(1, 81518800), (2, 40759400), (4, 20379700), (5, 16303760), (8, 10189850), (10, 8151880), (11, 7410800), (16, 5094925), (20, 4075940), (22, 3705400), (25, 3260752), (40, 2037970), (44, 1852700), (50, 1630376), (55, 1482160), (80, 1018985), (88, 926350), (97, 840400), (100, 815188), (110, 741080), (176, 463175), (191, 426800), (194, 420200), (200, 407594), (220, 370540), (275, 296432), (382, 213400), (388, 210100), (400, 203797), (440, 185270), (485, 168080), (550, 148216), (764, 106700), (776, 105050), (880, 92635), (955, 85360), (970, 84040), (1067, 76400), (1100, 74108), (1528, 53350), (1552, 52525), (1910, 42680), (1940, 42020), (2101, 38800), (2134, 38200), (2200, 37054), (2425, 33616), (3056, 26675), (3820, 21340), (3880, 21010), (4202, 19400), (4268, 19100), (4400, 18527), (4775, 17072), (4850, 16808), (5335, 15280), (7640, 10670), (7760, 10505), (8404, 9700), (8536, 9550)]