28912100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 72578688

約数和(自身を除く): 43666588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 103, 140, 175, 206, 350, 401, 412, 515, 700, 721, 802, 1030, 1442, 1604, 2005, 2060, 2575, 2807, 2884, 3605, 4010, 5150, 5614, 7210, 8020, 10025, 10300, 11228, 14035, 14420, 18025, 20050, 28070, 36050, 40100, 41303, 56140, 70175, 72100, 82606, 140350, 165212, 206515, 280700, 289121, 413030, 578242, 826060, 1032575, 1156484, 1445605, 2065150, 2891210, 4130300, 5782420, 7228025, 14456050, 28912100]

約数ペア:

[(1, 28912100), (2, 14456050), (4, 7228025), (5, 5782420), (7, 4130300), (10, 2891210), (14, 2065150), (20, 1445605), (25, 1156484), (28, 1032575), (35, 826060), (50, 578242), (70, 413030), (100, 289121), (103, 280700), (140, 206515), (175, 165212), (206, 140350), (350, 82606), (401, 72100), (412, 70175), (515, 56140), (700, 41303), (721, 40100), (802, 36050), (1030, 28070), (1442, 20050), (1604, 18025), (2005, 14420), (2060, 14035), (2575, 11228), (2807, 10300), (2884, 10025), (3605, 8020), (4010, 7210), (5150, 5614)]