21084444

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 55272672

約数和(自身を除く): 34188228

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 73, 113, 142, 146, 213, 219, 226, 284, 292, 339, 426, 438, 452, 639, 657, 678, 852, 876, 1017, 1278, 1314, 1356, 2034, 2556, 2628, 4068, 5183, 8023, 8249, 10366, 15549, 16046, 16498, 20732, 24069, 24747, 31098, 32092, 32996, 46647, 48138, 49494, 62196, 72207, 74241, 93294, 96276, 98988, 144414, 148482, 186588, 288828, 296964, 585679, 1171358, 1757037, 2342716, 3514074, 5271111, 7028148, 10542222, 21084444]

約数ペア:

[(1, 21084444), (2, 10542222), (3, 7028148), (4, 5271111), (6, 3514074), (9, 2342716), (12, 1757037), (18, 1171358), (36, 585679), (71, 296964), (73, 288828), (113, 186588), (142, 148482), (146, 144414), (213, 98988), (219, 96276), (226, 93294), (284, 74241), (292, 72207), (339, 62196), (426, 49494), (438, 48138), (452, 46647), (639, 32996), (657, 32092), (678, 31098), (852, 24747), (876, 24069), (1017, 20732), (1278, 16498), (1314, 16046), (1356, 15549), (2034, 10366), (2556, 8249), (2628, 8023), (4068, 5183)]