128359420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{227}}^1\times {\mathrm{577}}^1$

素因数の和:827

約数の個数: 72

約数和(自身を含む): 315490896

約数和(自身を除く): 187131476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 227, 245, 454, 490, 577, 908, 980, 1135, 1154, 1589, 2270, 2308, 2885, 3178, 4039, 4540, 5770, 6356, 7945, 8078, 11123, 11540, 15890, 16156, 20195, 22246, 28273, 31780, 40390, 44492, 55615, 56546, 80780, 111230, 113092, 130979, 141365, 222460, 261958, 282730, 523916, 565460, 654895, 916853, 1309790, 1833706, 2619580, 3667412, 4584265, 6417971, 9168530, 12835942, 18337060, 25671884, 32089855, 64179710, 128359420]

約数ペア:

[(1, 128359420), (2, 64179710), (4, 32089855), (5, 25671884), (7, 18337060), (10, 12835942), (14, 9168530), (20, 6417971), (28, 4584265), (35, 3667412), (49, 2619580), (70, 1833706), (98, 1309790), (140, 916853), (196, 654895), (227, 565460), (245, 523916), (454, 282730), (490, 261958), (577, 222460), (908, 141365), (980, 130979), (1135, 113092), (1154, 111230), (1589, 80780), (2270, 56546), (2308, 55615), (2885, 44492), (3178, 40390), (4039, 31780), (4540, 28273), (5770, 22246), (6356, 20195), (7945, 16156), (8078, 15890), (11123, 11540)]