64925840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{431}}^1$

素因数の和:720

約数の個数: 80

約数和(自身を含む): 173560320

約数和(自身を除く): 108634480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 269, 280, 431, 538, 560, 862, 1076, 1345, 1724, 1883, 2152, 2155, 2690, 3017, 3448, 3766, 4304, 4310, 5380, 6034, 6896, 7532, 8620, 9415, 10760, 12068, 15064, 15085, 17240, 18830, 21520, 24136, 30128, 30170, 34480, 37660, 48272, 60340, 75320, 115939, 120680, 150640, 231878, 241360, 463756, 579695, 811573, 927512, 1159390, 1623146, 1855024, 2318780, 3246292, 4057865, 4637560, 6492584, 8115730, 9275120, 12985168, 16231460, 32462920, 64925840]

約数ペア:

[(1, 64925840), (2, 32462920), (4, 16231460), (5, 12985168), (7, 9275120), (8, 8115730), (10, 6492584), (14, 4637560), (16, 4057865), (20, 3246292), (28, 2318780), (35, 1855024), (40, 1623146), (56, 1159390), (70, 927512), (80, 811573), (112, 579695), (140, 463756), (269, 241360), (280, 231878), (431, 150640), (538, 120680), (560, 115939), (862, 75320), (1076, 60340), (1345, 48272), (1724, 37660), (1883, 34480), (2152, 30170), (2155, 30128), (2690, 24136), (3017, 21520), (3448, 18830), (3766, 17240), (4304, 15085), (4310, 15064), (5380, 12068), (6034, 10760), (6896, 9415), (7532, 8620)]