28109772

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1997}}^1$

素因数の和:2047

約数の個数: 72

約数和(自身を含む): 78545376

約数和(自身を除く): 50435604

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, 1564, 1997, 2346, 3519, 3994, 4692, 5991, 7038, 7988, 11982, 14076, 17973, 23964, 33949, 35946, 45931, 67898, 71892, 91862, 101847, 135796, 137793, 183724, 203694, 275586, 305541, 407388, 413379, 551172, 611082, 780827, 826758, 1222164, 1561654, 1653516, 2342481, 3123308, 4684962, 7027443, 9369924, 14054886, 28109772]

約数ペア:

[(1, 28109772), (2, 14054886), (3, 9369924), (4, 7027443), (6, 4684962), (9, 3123308), (12, 2342481), (17, 1653516), (18, 1561654), (23, 1222164), (34, 826758), (36, 780827), (46, 611082), (51, 551172), (68, 413379), (69, 407388), (92, 305541), (102, 275586), (138, 203694), (153, 183724), (204, 137793), (207, 135796), (276, 101847), (306, 91862), (391, 71892), (414, 67898), (612, 45931), (782, 35946), (828, 33949), (1173, 23964), (1564, 17973), (1997, 14076), (2346, 11982), (3519, 7988), (3994, 7038), (4692, 5991)]