21015468

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1493}}^1$

素因数の和:1543

約数の個数: 72

約数和(自身を含む): 58732128

約数和(自身を除く): 37716660

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 23, 34, 36, 46, 51, 68, 69, 92, 102, 138, 153, 204, 207, 276, 306, 391, 414, 612, 782, 828, 1173, 1493, 1564, 2346, 2986, 3519, 4479, 4692, 5972, 7038, 8958, 13437, 14076, 17916, 25381, 26874, 34339, 50762, 53748, 68678, 76143, 101524, 103017, 137356, 152286, 206034, 228429, 304572, 309051, 412068, 456858, 583763, 618102, 913716, 1167526, 1236204, 1751289, 2335052, 3502578, 5253867, 7005156, 10507734, 21015468]

約数ペア:

[(1, 21015468), (2, 10507734), (3, 7005156), (4, 5253867), (6, 3502578), (9, 2335052), (12, 1751289), (17, 1236204), (18, 1167526), (23, 913716), (34, 618102), (36, 583763), (46, 456858), (51, 412068), (68, 309051), (69, 304572), (92, 228429), (102, 206034), (138, 152286), (153, 137356), (204, 103017), (207, 101524), (276, 76143), (306, 68678), (391, 53748), (414, 50762), (612, 34339), (782, 26874), (828, 25381), (1173, 17916), (1493, 14076), (1564, 13437), (2346, 8958), (2986, 7038), (3519, 5972), (4479, 4692)]