21389082

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 50972544

約数和(自身を除く): 29583462

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 97, 143, 194, 257, 286, 291, 429, 514, 582, 771, 858, 1067, 1261, 1542, 2134, 2522, 2827, 3201, 3341, 3783, 5654, 6402, 6682, 7566, 8481, 10023, 13871, 16962, 20046, 24929, 27742, 36751, 41613, 49858, 73502, 74787, 83226, 110253, 149574, 220506, 274219, 324077, 548438, 648154, 822657, 972231, 1645314, 1944462, 3564847, 7129694, 10694541, 21389082]

約数ペア:

[(1, 21389082), (2, 10694541), (3, 7129694), (6, 3564847), (11, 1944462), (13, 1645314), (22, 972231), (26, 822657), (33, 648154), (39, 548438), (66, 324077), (78, 274219), (97, 220506), (143, 149574), (194, 110253), (257, 83226), (286, 74787), (291, 73502), (429, 49858), (514, 41613), (582, 36751), (771, 27742), (858, 24929), (1067, 20046), (1261, 16962), (1542, 13871), (2134, 10023), (2522, 8481), (2827, 7566), (3201, 6682), (3341, 6402), (3783, 5654)]