281437936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:794

約数の個数: 80

約数和(自身を含む): 620585280

約数和(自身を除く): 339147344

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 52, 89, 92, 104, 178, 184, 208, 299, 356, 368, 598, 661, 712, 1157, 1196, 1322, 1424, 2047, 2314, 2392, 2644, 4094, 4628, 4784, 5288, 8188, 8593, 9256, 10576, 15203, 16376, 17186, 18512, 26611, 30406, 32752, 34372, 53222, 58829, 60812, 68744, 106444, 117658, 121624, 137488, 197639, 212888, 235316, 243248, 395278, 425776, 470632, 764777, 790556, 941264, 1353067, 1529554, 1581112, 2706134, 3059108, 3162224, 5412268, 6118216, 10824536, 12236432, 17589871, 21649072, 35179742, 70359484, 140718968, 281437936]

約数ペア:

[(1, 281437936), (2, 140718968), (4, 70359484), (8, 35179742), (13, 21649072), (16, 17589871), (23, 12236432), (26, 10824536), (46, 6118216), (52, 5412268), (89, 3162224), (92, 3059108), (104, 2706134), (178, 1581112), (184, 1529554), (208, 1353067), (299, 941264), (356, 790556), (368, 764777), (598, 470632), (661, 425776), (712, 395278), (1157, 243248), (1196, 235316), (1322, 212888), (1424, 197639), (2047, 137488), (2314, 121624), (2392, 117658), (2644, 106444), (4094, 68744), (4628, 60812), (4784, 58829), (5288, 53222), (8188, 34372), (8593, 32752), (9256, 30406), (10576, 26611), (15203, 18512), (16376, 17186)]