20101425

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 35616768

約数和(自身を除く): 15515343

約数列:

[1, 3, 5, 15, 23, 25, 43, 69, 75, 115, 129, 215, 271, 345, 575, 645, 813, 989, 1075, 1355, 1725, 2967, 3225, 4065, 4945, 6233, 6775, 11653, 14835, 18699, 20325, 24725, 31165, 34959, 58265, 74175, 93495, 155825, 174795, 268019, 291325, 467475, 804057, 873975, 1340095, 4020285, 6700475, 20101425]

約数ペア:

[(1, 20101425), (3, 6700475), (5, 4020285), (15, 1340095), (23, 873975), (25, 804057), (43, 467475), (69, 291325), (75, 268019), (115, 174795), (129, 155825), (215, 93495), (271, 74175), (345, 58265), (575, 34959), (645, 31165), (813, 24725), (989, 20325), (1075, 18699), (1355, 14835), (1725, 11653), (2967, 6775), (3225, 6233), (4065, 4945)]