90090455

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{509}}^1$

素因数の和:923

約数の個数: 32

約数和(自身を含む): 133660800

約数和(自身を除く): 43570345

約数列:

[1, 5, 7, 13, 35, 65, 91, 389, 455, 509, 1945, 2545, 2723, 3563, 5057, 6617, 13615, 17815, 25285, 33085, 35399, 46319, 176995, 198001, 231595, 990005, 1386007, 2574013, 6930035, 12870065, 18018091, 90090455]

約数ペア:

[(1, 90090455), (5, 18018091), (7, 12870065), (13, 6930035), (35, 2574013), (65, 1386007), (91, 990005), (389, 231595), (455, 198001), (509, 176995), (1945, 46319), (2545, 35399), (2723, 33085), (3563, 25285), (5057, 17815), (6617, 13615)]