21193263

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{229}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 38176320

約数和(自身を除く): 16983057

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 113, 117, 229, 273, 339, 687, 791, 819, 1017, 1469, 1603, 2061, 2373, 2977, 4407, 4809, 7119, 8931, 10283, 13221, 14427, 20839, 25877, 26793, 30849, 62517, 77631, 92547, 181139, 187551, 232893, 336401, 543417, 1009203, 1630251, 2354807, 3027609, 7064421, 21193263]

約数ペア:

[(1, 21193263), (3, 7064421), (7, 3027609), (9, 2354807), (13, 1630251), (21, 1009203), (39, 543417), (63, 336401), (91, 232893), (113, 187551), (117, 181139), (229, 92547), (273, 77631), (339, 62517), (687, 30849), (791, 26793), (819, 25877), (1017, 20839), (1469, 14427), (1603, 13221), (2061, 10283), (2373, 8931), (2977, 7119), (4407, 4809)]