21754900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 50996736

約数和(自身を除く): 29241836

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 67, 68, 85, 100, 134, 170, 191, 268, 335, 340, 382, 425, 670, 764, 850, 955, 1139, 1340, 1675, 1700, 1910, 2278, 3247, 3350, 3820, 4556, 4775, 5695, 6494, 6700, 9550, 11390, 12797, 12988, 16235, 19100, 22780, 25594, 28475, 32470, 51188, 56950, 63985, 64940, 81175, 113900, 127970, 162350, 217549, 255940, 319925, 324700, 435098, 639850, 870196, 1087745, 1279700, 2175490, 4350980, 5438725, 10877450, 21754900]

約数ペア:

[(1, 21754900), (2, 10877450), (4, 5438725), (5, 4350980), (10, 2175490), (17, 1279700), (20, 1087745), (25, 870196), (34, 639850), (50, 435098), (67, 324700), (68, 319925), (85, 255940), (100, 217549), (134, 162350), (170, 127970), (191, 113900), (268, 81175), (335, 64940), (340, 63985), (382, 56950), (425, 51188), (670, 32470), (764, 28475), (850, 25594), (955, 22780), (1139, 19100), (1340, 16235), (1675, 12988), (1700, 12797), (1910, 11390), (2278, 9550), (3247, 6700), (3350, 6494), (3820, 5695), (4556, 4775)]