18939015

素因数分解:

$3^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{463}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 34360128

約数和(自身を除く): 15421113

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 303, 405, 463, 505, 909, 1389, 1515, 2315, 2727, 4167, 4545, 6945, 8181, 12501, 13635, 20835, 37503, 40905, 46763, 62505, 140289, 187515, 233815, 420867, 701445, 1262601, 2104335, 3787803, 6313005, 18939015]

約数ペア:

[(1, 18939015), (3, 6313005), (5, 3787803), (9, 2104335), (15, 1262601), (27, 701445), (45, 420867), (81, 233815), (101, 187515), (135, 140289), (303, 62505), (405, 46763), (463, 40905), (505, 37503), (909, 20835), (1389, 13635), (1515, 12501), (2315, 8181), (2727, 6945), (4167, 4545)]