61221720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{72883}}^1$

素因数の和:72904

約数の個数: 64

約数和(自身を含む): 209905920

約数和(自身を除く): 148684200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 72883, 145766, 218649, 291532, 364415, 437298, 510181, 583064, 728830, 874596, 1020362, 1093245, 1457660, 1530543, 1749192, 2040724, 2186490, 2550905, 2915320, 3061086, 4081448, 4372980, 5101810, 6122172, 7652715, 8745960, 10203620, 12244344, 15305430, 20407240, 30610860, 61221720]

約数ペア:

[(1, 61221720), (2, 30610860), (3, 20407240), (4, 15305430), (5, 12244344), (6, 10203620), (7, 8745960), (8, 7652715), (10, 6122172), (12, 5101810), (14, 4372980), (15, 4081448), (20, 3061086), (21, 2915320), (24, 2550905), (28, 2186490), (30, 2040724), (35, 1749192), (40, 1530543), (42, 1457660), (56, 1093245), (60, 1020362), (70, 874596), (84, 728830), (105, 583064), (120, 510181), (140, 437298), (168, 364415), (210, 291532), (280, 218649), (420, 145766), (840, 72883)]