21520590

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7883}}^1$

素因数の和:7913

約数の個数: 64

約数和(自身を含む): 63576576

約数和(自身を除く): 42055986

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7883, 15766, 23649, 39415, 47298, 55181, 78830, 102479, 110362, 118245, 165543, 204958, 236490, 275905, 307437, 331086, 512395, 551810, 614874, 717353, 827715, 1024790, 1434706, 1537185, 1655430, 2152059, 3074370, 3586765, 4304118, 7173530, 10760295, 21520590]

約数ペア:

[(1, 21520590), (2, 10760295), (3, 7173530), (5, 4304118), (6, 3586765), (7, 3074370), (10, 2152059), (13, 1655430), (14, 1537185), (15, 1434706), (21, 1024790), (26, 827715), (30, 717353), (35, 614874), (39, 551810), (42, 512395), (65, 331086), (70, 307437), (78, 275905), (91, 236490), (105, 204958), (130, 165543), (182, 118245), (195, 110362), (210, 102479), (273, 78830), (390, 55181), (455, 47298), (546, 39415), (910, 23649), (1365, 15766), (2730, 7883)]