21473270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3371}}^1$

素因数の和:3405

約数の個数: 48

約数和(自身を含む): 48435408

約数和(自身を除く): 26962138

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3371, 6370, 6742, 16855, 23597, 33710, 43823, 47194, 87646, 117985, 165179, 219115, 235970, 306761, 330358, 438230, 613522, 825895, 1533805, 1651790, 2147327, 3067610, 4294654, 10736635, 21473270]

約数ペア:

[(1, 21473270), (2, 10736635), (5, 4294654), (7, 3067610), (10, 2147327), (13, 1651790), (14, 1533805), (26, 825895), (35, 613522), (49, 438230), (65, 330358), (70, 306761), (91, 235970), (98, 219115), (130, 165179), (182, 117985), (245, 87646), (455, 47194), (490, 43823), (637, 33710), (910, 23597), (1274, 16855), (3185, 6742), (3371, 6370)]