256866558

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2591}}^1$

素因数の和:2681

約数の個数: 64

約数和(自身を含む): 585252864

約数和(自身を除く): 328386306

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 41, 62, 78, 82, 93, 123, 186, 246, 403, 533, 806, 1066, 1209, 1271, 1599, 2418, 2542, 2591, 3198, 3813, 5182, 7626, 7773, 15546, 16523, 33046, 33683, 49569, 67366, 80321, 99138, 101049, 106231, 160642, 202098, 212462, 240963, 318693, 481926, 637386, 1044173, 1381003, 2088346, 2762006, 3132519, 3293161, 4143009, 6265038, 6586322, 8286018, 9879483, 19758966, 42811093, 85622186, 128433279, 256866558]

約数ペア:

[(1, 256866558), (2, 128433279), (3, 85622186), (6, 42811093), (13, 19758966), (26, 9879483), (31, 8286018), (39, 6586322), (41, 6265038), (62, 4143009), (78, 3293161), (82, 3132519), (93, 2762006), (123, 2088346), (186, 1381003), (246, 1044173), (403, 637386), (533, 481926), (806, 318693), (1066, 240963), (1209, 212462), (1271, 202098), (1599, 160642), (2418, 106231), (2542, 101049), (2591, 99138), (3198, 80321), (3813, 67366), (5182, 49569), (7626, 33683), (7773, 33046), (15546, 16523)]