2021105905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{601}}^1$

素因数の和:1034

約数の個数: 64

約数和(自身を含む): 3155443200

約数和(自身を除く): 1134337295

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 389, 455, 601, 665, 1235, 1729, 1945, 2723, 3005, 4207, 5057, 7391, 7813, 8645, 11419, 13615, 21035, 25285, 35399, 36955, 39065, 51737, 54691, 57095, 79933, 96083, 148447, 176995, 233789, 258685, 273455, 399665, 480415, 672581, 742235, 1039129, 1168945, 1636523, 3039257, 3362905, 4441991, 5195645, 8182615, 15196285, 21274799, 22209955, 31093937, 57745883, 106373995, 155469685, 288729415, 404221181, 2021105905]

約数ペア:

[(1, 2021105905), (5, 404221181), (7, 288729415), (13, 155469685), (19, 106373995), (35, 57745883), (65, 31093937), (91, 22209955), (95, 21274799), (133, 15196285), (247, 8182615), (389, 5195645), (455, 4441991), (601, 3362905), (665, 3039257), (1235, 1636523), (1729, 1168945), (1945, 1039129), (2723, 742235), (3005, 672581), (4207, 480415), (5057, 399665), (7391, 273455), (7813, 258685), (8645, 233789), (11419, 176995), (13615, 148447), (21035, 96083), (25285, 79933), (35399, 57095), (36955, 54691), (39065, 51737)]