159490215

素因数分解:

$3^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1999}}^1$

素因数の和:2213

約数の個数: 40

約数和(自身を含む): 287496000

約数和(自身を除く): 128005785

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 197, 405, 591, 985, 1773, 1999, 2955, 5319, 5997, 8865, 9995, 15957, 17991, 26595, 29985, 53973, 79785, 89955, 161919, 269865, 393803, 809595, 1181409, 1969015, 3544227, 5907045, 10632681, 17721135, 31898043, 53163405, 159490215]

約数ペア:

[(1, 159490215), (3, 53163405), (5, 31898043), (9, 17721135), (15, 10632681), (27, 5907045), (45, 3544227), (81, 1969015), (135, 1181409), (197, 809595), (405, 393803), (591, 269865), (985, 161919), (1773, 89955), (1999, 79785), (2955, 53973), (5319, 29985), (5997, 26595), (8865, 17991), (9995, 15957)]