209711425

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:311

約数の個数: 72

約数和(自身を含む): 335871360

約数和(自身を除く): 126159935

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 79, 175, 197, 245, 275, 385, 395, 539, 553, 869, 985, 1225, 1379, 1925, 1975, 2167, 2695, 2765, 3871, 4345, 4925, 6083, 6895, 9653, 10835, 13475, 13825, 15169, 15563, 19355, 21725, 30415, 34475, 42581, 48265, 54175, 75845, 77815, 96775, 106183, 108941, 152075, 171193, 212905, 241325, 379225, 389075, 530915, 544705, 762587, 855965, 1064525, 1198351, 2654575, 2723525, 3812935, 4279825, 5991755, 8388457, 19064675, 29958775, 41942285, 209711425]

約数ペア:

[(1, 209711425), (5, 41942285), (7, 29958775), (11, 19064675), (25, 8388457), (35, 5991755), (49, 4279825), (55, 3812935), (77, 2723525), (79, 2654575), (175, 1198351), (197, 1064525), (245, 855965), (275, 762587), (385, 544705), (395, 530915), (539, 389075), (553, 379225), (869, 241325), (985, 212905), (1225, 171193), (1379, 152075), (1925, 108941), (1975, 106183), (2167, 96775), (2695, 77815), (2765, 75845), (3871, 54175), (4345, 48265), (4925, 42581), (6083, 34475), (6895, 30415), (9653, 21725), (10835, 19355), (13475, 15563), (13825, 15169)]