21893690

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:532

約数の個数: 64

約数和(自身を含む): 49593600

約数和(自身を除く): 27699910

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 343, 455, 490, 491, 637, 686, 910, 982, 1274, 1715, 2455, 3185, 3430, 3437, 4459, 4910, 6370, 6383, 6874, 8918, 12766, 17185, 22295, 24059, 31915, 34370, 44590, 44681, 48118, 63830, 89362, 120295, 168413, 223405, 240590, 312767, 336826, 446810, 625534, 842065, 1563835, 1684130, 2189369, 3127670, 4378738, 10946845, 21893690]

約数ペア:

[(1, 21893690), (2, 10946845), (5, 4378738), (7, 3127670), (10, 2189369), (13, 1684130), (14, 1563835), (26, 842065), (35, 625534), (49, 446810), (65, 336826), (70, 312767), (91, 240590), (98, 223405), (130, 168413), (182, 120295), (245, 89362), (343, 63830), (455, 48118), (490, 44681), (491, 44590), (637, 34370), (686, 31915), (910, 24059), (982, 22295), (1274, 17185), (1715, 12766), (2455, 8918), (3185, 6874), (3430, 6383), (3437, 6370), (4459, 4910)]