200421025

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 310992000

約数和(自身を除く): 110570975

約数列:

[1, 5, 7, 19, 25, 35, 49, 79, 95, 109, 133, 175, 245, 395, 475, 545, 553, 665, 763, 931, 1225, 1501, 1975, 2071, 2725, 2765, 3325, 3815, 3871, 4655, 5341, 7505, 8611, 10355, 10507, 13825, 14497, 19075, 19355, 23275, 26705, 37525, 43055, 51775, 52535, 60277, 72485, 73549, 96775, 101479, 133525, 163609, 215275, 262675, 301385, 362425, 367745, 421939, 507395, 818045, 1145263, 1506925, 1838725, 2109695, 2536975, 4090225, 5726315, 8016841, 10548475, 28631575, 40084205, 200421025]

約数ペア:

[(1, 200421025), (5, 40084205), (7, 28631575), (19, 10548475), (25, 8016841), (35, 5726315), (49, 4090225), (79, 2536975), (95, 2109695), (109, 1838725), (133, 1506925), (175, 1145263), (245, 818045), (395, 507395), (475, 421939), (545, 367745), (553, 362425), (665, 301385), (763, 262675), (931, 215275), (1225, 163609), (1501, 133525), (1975, 101479), (2071, 96775), (2725, 73549), (2765, 72485), (3325, 60277), (3815, 52535), (3871, 51775), (4655, 43055), (5341, 37525), (7505, 26705), (8611, 23275), (10355, 19355), (10507, 19075), (13825, 14497)]