31881519

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:301

約数の個数: 40

約数和(自身を含む): 50471520

約数和(自身を除く): 18590001

約数列:

[1, 3, 9, 23, 27, 69, 81, 109, 157, 207, 327, 471, 621, 981, 1413, 1863, 2507, 2943, 3611, 4239, 7521, 8829, 10833, 12717, 17113, 22563, 32499, 51339, 67689, 97497, 154017, 203067, 292491, 393599, 462051, 1180797, 1386153, 3542391, 10627173, 31881519]

約数ペア:

[(1, 31881519), (3, 10627173), (9, 3542391), (23, 1386153), (27, 1180797), (69, 462051), (81, 393599), (109, 292491), (157, 203067), (207, 154017), (327, 97497), (471, 67689), (621, 51339), (981, 32499), (1413, 22563), (1863, 17113), (2507, 12717), (2943, 10833), (3611, 8829), (4239, 7521)]