21098056

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 27285944

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 79, 133, 152, 158, 251, 266, 316, 502, 532, 553, 632, 1004, 1064, 1106, 1501, 1757, 2008, 2212, 3002, 3514, 4424, 4769, 6004, 7028, 9538, 10507, 12008, 14056, 19076, 19829, 21014, 33383, 38152, 39658, 42028, 66766, 79316, 84056, 133532, 138803, 158632, 267064, 277606, 376751, 555212, 753502, 1110424, 1507004, 2637257, 3014008, 5274514, 10549028, 21098056]

約数ペア:

[(1, 21098056), (2, 10549028), (4, 5274514), (7, 3014008), (8, 2637257), (14, 1507004), (19, 1110424), (28, 753502), (38, 555212), (56, 376751), (76, 277606), (79, 267064), (133, 158632), (152, 138803), (158, 133532), (251, 84056), (266, 79316), (316, 66766), (502, 42028), (532, 39658), (553, 38152), (632, 33383), (1004, 21014), (1064, 19829), (1106, 19076), (1501, 14056), (1757, 12008), (2008, 10507), (2212, 9538), (3002, 7028), (3514, 6004), (4424, 4769)]