20505015

素因数分解:

$3^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2267}}^1$

素因数の和:2348

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 16508745

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 135, 201, 335, 603, 1005, 1809, 2267, 3015, 6801, 9045, 11335, 20403, 34005, 61209, 102015, 151889, 306045, 455667, 759445, 1367001, 2278335, 4101003, 6835005, 20505015]

約数ペア:

[(1, 20505015), (3, 6835005), (5, 4101003), (9, 2278335), (15, 1367001), (27, 759445), (45, 455667), (67, 306045), (135, 151889), (201, 102015), (335, 61209), (603, 34005), (1005, 20403), (1809, 11335), (2267, 9045), (3015, 6801)]