21180496675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{367}}^1\times {\mathrm{743}}^1$

素因数の和:1372

約数の個数: 48

約数和(自身を含む): 28518174720

約数和(自身を除く): 7337678045

約数列:

[1, 5, 13, 25, 65, 239, 325, 367, 743, 1195, 1835, 3107, 3715, 4771, 5975, 9175, 9659, 15535, 18575, 23855, 48295, 77675, 87713, 119275, 177577, 241475, 272681, 438565, 887885, 1140269, 1363405, 2192825, 2308501, 3544853, 4439425, 5701345, 6817025, 11542505, 17724265, 28506725, 57712525, 65170759, 88621325, 325853795, 847219867, 1629268975, 4236099335, 21180496675]

約数ペア:

[(1, 21180496675), (5, 4236099335), (13, 1629268975), (25, 847219867), (65, 325853795), (239, 88621325), (325, 65170759), (367, 57712525), (743, 28506725), (1195, 17724265), (1835, 11542505), (3107, 6817025), (3715, 5701345), (4771, 4439425), (5975, 3544853), (9175, 2308501), (9659, 2192825), (15535, 1363405), (18575, 1140269), (23855, 887885), (48295, 438565), (77675, 272681), (87713, 241475), (119275, 177577)]